Complaint Letter to a Company (2026): 5 Examples & Templates

Last Updated: July 2026

A complaint letter to a company is a professional way to report poor service, damaged products, billing issues, delivery delays, or unresolved customer problems.

When written clearly and respectfully, complaint letters often lead to faster solutions, refunds, replacements, or apologies.

In this guide, you will find complaint letter examples, templates, and best practices for 2026.

Why Send a Complaint Letter?

Creates written proof of the issue
Shows professionalism
Improves chances of resolution
Can speed up refunds or replacements
Helps customer service investigate faster

Best Structure for a Complaint Letter

1. Your Details

Full name
Email
Order number (if relevant)
Date

2. Company Details

Company name
Customer support department

3. Explain the Problem Clearly

State facts, dates, and what happened.

4. Request a Solution

Examples:

Refund
Replacement
Repair
Explanation
Service correction

5. Professional Closing

Thank you for your time and attention.

Complaint Letter Example – Damaged Product

Dear Customer Service Team,

I am writing regarding Order #45822, delivered on June 2, 2026. Unfortunately, the product arrived damaged and unusable.

I have attached photos of the issue. I kindly request a replacement or full refund at your earliest convenience.

I appreciate your prompt attention to this matter.

Sincerely,
Your Name

Complaint Letter Example – Poor Service

Dear Manager,

I am writing to express concern regarding the service I received at your store on May 28, 2026.

The staff response was unprofessional, and my issue was not resolved after a long delay.

I hope this feedback helps improve future customer experience. I would appreciate a response regarding the matter.

Sincerely,
Your Name

Complaint Letter Example – Billing Error

Dear Billing Department,

I noticed an incorrect charge of $79 on my recent invoice dated June 5, 2026.

Please review the account and advise on correction or refund.

Thank you.

Best Tips for Writing a Strong Complaint Letter

Stay Calm

Professional tone gets better results than anger.

Use Facts

Include dates, order numbers, and details.

Be Clear About What You Want

Refund, replacement, apology, or correction.

Keep Copies

Save emails, receipts, screenshots, and letters.

Follow Up if Needed

If no response arrives, send a polite reminder.

Common Mistakes to Avoid

Being rude or insulting
Writing emotional messages only
No evidence attached
No requested solution
Too vague

Two More Complaint Letter Examples

Complaint About Delayed Delivery

Subject: Complaint Regarding Delayed Order #[Order Number]

Dear Customer Service Team,

I am writing about Order #[Order Number], placed on [date] with an expected delivery date of [date]. The order has not arrived, and the latest tracking information shows [status].

Please confirm the current location of the order and provide either a revised delivery date or the available cancellation and refund options. I have attached the order confirmation and tracking details.

I would appreciate a response by [reasonable date].

Sincerely,
[Your Name]

Complaint About a Subscription or Recurring Charge

Subject: Request to Review Recurring Charge — Account #[Number]

Dear Billing Department,

I am disputing a charge of $[amount] dated [date] on Account #[number]. I previously [cancelled the service / changed the plan / did not authorize the renewal] on [date].

Please review the account, explain the charge, and confirm whether a refund or billing correction will be issued. Attached are copies of [cancellation confirmation, invoice, receipt, or screenshots].

Thank you for confirming the outcome in writing.

Best regards,
[Your Name]

What to Attach

Receipt, order confirmation, invoice, or contract
Photos or videos of damage
Tracking information
Warranty or return-policy details
Previous customer-service messages
Bank or card statement with unrelated information redacted

How to Request a Resolution

Ask for one clear outcome that matches the issue: repair, replacement, refund, billing correction, cancellation, explanation, or another practical remedy. State a reasonable response date without making threats or claiming rights that may not apply.

Complaint Escalation Checklist

Contact the company through its official customer-service channel.
Keep the case or reference number.
Send a concise written follow-up with supporting evidence.
Use the company’s formal complaints or appeals process.
Check the appropriate consumer-protection, regulator, payment-provider, or dispute-resolution service for your location and issue.
Seek qualified advice before starting legal action.

Important Consumer Note

Refund, warranty, chargeback, cancellation, and complaint rights vary by jurisdiction, product, service, payment method, and contract. This template helps organize a complaint but does not replace official guidance or legal advice.

Helpful Related Guides

Official Starting Point

USAGov: Complaints About Products and Services

Frequently Asked Questions

Should a complaint letter be formal?

Use a calm, professional tone and include facts, evidence, and the requested resolution.

Can I email the complaint?

Yes, when the company accepts email complaints. An online form or account portal may also provide a useful case number.

How long should the letter be?

Use enough detail to identify the transaction and problem, but remove unrelated history. One page is often sufficient for a straightforward issue.

Should I include a deadline?

You may request a reasonable response date, especially when a return, warranty, travel date, or service interruption is time-sensitive.

What if the company ignores the complaint?

Use the formal escalation process and the appropriate consumer, regulator, payment, or legal channel for your location and issue.

Should I threaten a negative review?

No. Focus on the facts and requested resolution. Threats can make productive resolution more difficult.

Final Thoughts

An effective complaint letter identifies the transaction, explains the problem with dates and evidence, requests a specific outcome, and gives the company a practical way to respond. Keep copies of everything and use the appropriate formal escalation route when necessary.