How to Write a Formal Complaint Letter for Defective Products

Formal Complaint: Faulty Headphones

To: [email protected]
From: [email protected]
Subject: Complaint about Faulty Headphones

Dear Sir or Madam,

I am writing to express my strong dissatisfaction with the product I purchased from your online store last Tuesday, 19th November. I believe it is important to inform you about the issues I have experienced so that they can be properly addressed.

Reported Issues

• Damaged Hardware: The headphones (Reference No. 58492-B) arrived with a non-functional left speaker.
• Quality Control Failure: Despite claims that the item was “carefully tested before shipping,” the product arrived unusable.
• Poor Customer Support: I was promised assistance within 24 hours, but three days have passed without a response.

It seems only fair that you should send me a new pair of headphones or provide a full refund, as I paid for a product that does not work properly. I would also be grateful if you could review your quality-control procedures to avoid similar incidents in the future.

I look forward to receiving your prompt reply.

Yours faithfully,
Daniel Roberts

Formal Complaint: Defective Smartwatch

To: [email protected]
From: [email protected]
Subject: Complaint about Defective Smartwatch

Dear Sir or Madam,

I am writing to express my dissatisfaction with the smartwatch I purchased from your online store on 20th November. Unfortunately, the product has several defects that prevent it from functioning as advertised.

Technical Deficiencies

• Battery Performance: The battery lasts only four hours, failing to meet the advertised 48-hour capacity.
• Sensor Malfunction: The heart-rate sensor provides inconsistent readings and frequently stops measuring.
• Unresolved Support: Technical support suggested a software update, but the issue persists.

It seems only fair that you replace the smartwatch with a fully functional one or offer a full refund, as I have received a product that does not live up to the expectations presented on your website. I would also be grateful if you reviewed the quality of this model to prevent similar incidents with future customers.

I look forward to receiving your prompt reply.

Yours faithfully,
Oliver Johnson