Complaint Letters

How To Write Great Customer Service Complaint Letter [5+ Templates]

customer service complaint letter
Written by Danish Ali

Customer service is an essential part of any business, and it is essential to provide the best possible experience to customers. However, there are times when customers encounter issues that require a formal complaint letter to be written. It is essential to understand the importance of a professional complaint letter and how it can create a positive impact on customer service. This article aims to highlight the significance of a well-crafted Customer Service Complaint Letter, how it can impact customer service, and why it is crucial to write one in a professional manner.

A professional complaint letter is an effective tool for addressing any concerns or issues that a customer may have with a product or service. It serves as a formal record of the customer’s dissatisfaction and outlines the steps that the business should take to resolve the issue. Writing a complaint letter professionally is crucial as it helps to convey the seriousness of the issue and can ensure that the complaint is taken seriously by the business.

A well-crafted complaint letter can create a positive impact on customer service by highlighting areas where the business needs to improve. It can help the business to identify areas where they are falling short and make the necessary changes to improve the customer experience.

Additionally, it shows the customer that the business takes their concerns seriously and is willing to take the necessary steps to address them. Overall, writing a professional complaint letter can lead to a better customer service experience and help businesses improve their overall service quality. Read on to find out more about the importance of a professional Customer Service Complaint Letter and how it can benefit both customers and businesses.

5 Steps To Write Appealing Customer Service Complaint Letter?

Writing an effective customer service complaint letter can be a great way to get your grievances addressed and ensure a positive outcome. Here are five steps that can help you write the best customer service complaint letter that creates an impact.

  • Step 1: Start with a clear and concise introduction, stating the purpose of the letter and summarizing the issue you are facing.

Example: I am writing to bring to your attention a recent issue that I faced with your company’s product. I purchased a new laptop from your store last month, but it has been malfunctioning since the very first day.

  • Step 2: Provide specific details about the incident, including dates, times, names, and any other relevant information that can help the company investigate the issue.

Example: On the 5th of March, I turned on the laptop for the first time, but it wouldn’t start. I immediately called your customer service department, and they asked me to bring the laptop to your store. After spending an hour at the store, I was told that the issue had been resolved, but the laptop started malfunctioning again the very next day.

  • Step 3: State the impact the incident has had on you, such as financial losses, inconvenience, or emotional distress.

Example: This issue has caused me significant inconvenience as I rely on this laptop for work. I have already spent several hours trying to resolve the issue and have had to borrow a laptop from a friend, which has caused me additional stress and inconvenience.

  • Step 4: Request a specific solution or action that you would like the company to take to resolve the issue.

Example: I would appreciate it if you could arrange for a replacement laptop to be sent to me as soon as possible, or provide a full refund so that I can purchase a different laptop from another vendor.

  • Step 5: End the letter on a polite note, thanking the company for their attention and expressing your hope for a positive resolution to the issue.

Example: I appreciate your attention to this matter and hope that we can resolve this issue quickly and satisfactorily. Thank you for your time and assistance in this matter.

By following these five steps, you can write an effective customer service complaint letter that creates an impact and gets the attention of the company. Remember to be specific, polite, and clear about your issue, and provide all the necessary details to help the company investigate and resolve the problem.

Example of Customer Service Complaint Letter

Customer Service Complaint Letter Format

SectionInformation to Include
Salutation / GreetingsDear Sir or Madam / Dear Manager
Introductory ParagraphIdentify what the issue is.
Body ParagraphsComplaint/ issue 1 and justification
Complaint/ issue 2 and justification
If Complaint/ issue 3 and justification
ClosingSuggested action to be taken
– sign off with “Yours faithfully”

Example of Customer Service Complaint Letter

Dear Customer Service Manager,

I am writing to express my disappointment with the service I received at your store on April 5th. I visited your store to purchase a new laptop and was assisted by one of your sales associates. Unfortunately, the experience was far from satisfactory.

Firstly, the sales associate seemed disinterested in helping me and was not knowledgeable about the products in the store. When I asked for recommendations on laptops, she simply pointed to a few on the shelf and walked away without providing any further information.

Furthermore, when I asked for assistance in setting up the laptop after purchasing it, the sales associate simply handed me a manual and left me to figure it out on my own. This lack of customer service is unacceptable, especially given the amount of money I spent on the laptop.

I hope that you can address these issues and take steps to improve the level of service at your store. I look forward to hearing from you soon.


[Your Name]

Sample Customer Service Complaint Letter

Dear Customer Service,

I am writing to express my disappointment with the service I received from your company. I recently purchased a product from your website and encountered several issues that have left me feeling unsatisfied.

Firstly, the product I received was not as described on your website. The color was different and the size was smaller than what was advertised. Secondly, the product arrived damaged, with visible scratches and dents. This is unacceptable for a new product.

I tried contacting your customer service team via phone and email, but was met with unhelpful responses and long wait times. I was even disconnected from a phone call without a resolution.

As a paying customer, I expect better service and quality products. I would appreciate it if you could rectify these issues as soon as possible, either by sending me a replacement product that meets the advertised specifications, or by issuing a refund.

I hope to hear back from you soon with a satisfactory solution to this problem.


[Your Name]

Customer Service Complaint Letter Template

Dear [Customer Service],

I am writing to express my disappointment with the service that I received from your company. On [date], I [describe the issue you faced and how it affected you].

I attempted to resolve the issue by [describe any previous attempts to resolve the issue]. However, I have not received any satisfactory response or resolution from your company.

I am a long-time customer of your company, and I expected better service from your organization. I am extremely dissatisfied with the way my issue has been handled and would like a prompt resolution.

I request that you take immediate action to [describe the specific action you want the company to take to resolve the issue]. If this issue is not resolved in a satisfactory manner, I will be forced to take my business elsewhere.

I hope to hear from you soon and look forward to a prompt resolution to this matter.


[Your Name]

Customer Service Complaint Letter

Dear [Name of Customer Service Manager],

I am writing to express my dissatisfaction with the level of service I received from your company. On [date], I had an issue with [product/service] and contacted your customer service department for assistance. Unfortunately, the service I received was not satisfactory and left me feeling frustrated and disappointed.

Specifically, I had to wait on hold for an extended period of time before speaking with a representative. When I finally did speak with someone, they seemed uninterested in helping me and were not able to provide me with a resolution to my problem. In addition, I found the representative to be rude and unprofessional in their tone and manner.

As a loyal customer of your company, I expect better treatment and service. I would appreciate if you could look into this matter and ensure that your customer service department is better equipped to handle customer complaints and provide satisfactory solutions. I would also appreciate if you could provide me with an explanation for the poor service I received and a plan for preventing similar issues from occurring in the future.

Thank you for your attention to this matter, and I look forward to hearing back from you soon.

[Your Name]

10 Useful Phrases for Customer Service Complaint Letter

I am here to assist you in writing a customer service complaint letter. Below are 10 useful phrases that you can use in your letter:

  • I am writing to express my dissatisfaction with…
  • I regret to inform you that…
  • I am disappointed with the level of service I have received…
  • I would like to bring to your attention…
  • It is unacceptable that…
  • I expect to receive a prompt response to this matter…
  • I would appreciate it if you could resolve this issue as soon as possible…
  • I hope that you will take the necessary steps to prevent this from happening again…
  • I am requesting compensation for the inconvenience caused…
  • I look forward to hearing from you regarding this matter.

In closing, I would like to reiterate the importance of addressing this issue and finding a resolution. Thank you for your attention to this matter, and I hope that we can work together to find a satisfactory solution.

Sample Customer Service Complaint Letter

Common Mistakes When Writing a Customer Service Complaint Letter?

  • Being too emotional: While it’s understandable to be frustrated or angry when writing a complaint letter, it’s important to remain calm and professional. Avoid using offensive language or making personal attacks on the customer service representative.
  • Not providing enough details: In order for the company to properly address your complaint, you need to provide specific details about the issue. Be sure to include dates, times, names of employees, and any relevant order or account numbers.
  • Not stating a clear resolution: When writing a complaint letter, it’s important to state what you would like the company to do to resolve the issue. Whether you’re looking for a refund, an apology, or a replacement product, make sure to clearly state your desired resolution.


Writing a customer service complaint letter can be a powerful tool for resolving issues and improving service. When writing a complaint letter, it is important to clearly state the problem, provide relevant details, and express your expectations for a resolution. It is also essential to send the letter to the correct person or department and to follow up if a response is not received. Common mistakes when writing a complaint letter include being too emotional, using aggressive language, or not providing enough information.

By avoiding these mistakes and using templates to guide your writing, you can increase the likelihood of receiving a satisfactory response to your complaint. We have provided multiple free and ready-to-use complaint letter templates that you can use as a starting point to craft your own complaint letter. Remember that when done correctly, a complaint letter can be an effective way to voice your concerns and achieve a resolution to your problem.

About the author

Danish Ali

I have a five-year Experience in Digital Marketing Run Different Blogs & Businesses That Generate six Figure Income. I am Happy to Consult Startups & New Businesses & You to Make your Business a Brand.