Letters & EmailsFreeUpdated August 2026

Complaint Letter Template

Formal complaint layout documenting transactional order issues, damaged goods, or service disruptions. Fill in the fields to customize your document, then open it in the editor to edit any text, use the AI assistant to rewrite, and export as PDF or Word.

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Jane Smith
248 Sansome Street, Suite 499, Chicago, IL 60601
hello@janesmith.com · +1 (555) 431-7517

Alex R. Morgan

123 Maple Street | hello@janesmith.com | +1 (555) 431-7517

2026-07-01

Customer Support & Returns Department, Jane Smith

55 Fruit St, Boston, MA 02114

Subject: Formal complaint regarding Order #ORD-882299

Dear Customer Support Team,

I am writing to formally register my dissatisfaction with a recent purchase and to request prompt resolution. On 2026-06-15 I ordered Templix Enterprise Edition (Annual Retainer) under Order #ORD-882299, and unfortunately the experience has fallen well short of what was promised at checkout.

Specifically, the API access keys I paid for were never delivered after my purchase confirmation. Despite the order showing as complete and payment being taken in full, I have been unable to use the product I was charged for, and my two prior support enquiries have gone unanswered.

This has caused real disruption. I purchased the service to meet a project deadline, and the missing access has forced delays that reflect poorly on my own commitments. As a paying customer I expected the basic deliverable to arrive as advertised.

To resolve this matter, I am requesting one of the following:

  • Immediate activation and delivery of the purchased API access keys
  • Or a full refund of the annual fee paid
  • Written confirmation of which resolution you will provide within 14 business days

I would prefer to resolve this directly and amicably. Please treat this as a formal complaint and respond in writing at the contact details above.

Sincerely,

Sarah Jenkins

Requires a formal response within 14 business days.
Jane Smith

This free Complaint Letter template is a ready-to-use document you can fill in, export and send today. Formal complaint layout documenting transactional order issues, damaged goods, or service disruptions. Use it to say one thing clearly, to one person, in a form they can file and act on. Every field is editable, the preview updates as you type, and the finished file downloads as PDF or Word with no watermark and no sign-up.

Who this Complaint Letter template is for

  • Employees and HR teams issuing formal correspondence
  • Job seekers writing to a named hiring manager
  • Anyone who needs a record of what was said and when

What's included in this Complaint Letter template

  • Full name
  • Sender address
  • Email
  • Phone
  • Letter date
  • Company name
  • Customer service dept
  • Recipient address
  • Order number
  • Purchase date
  • Product service name
  • Signature full name

How to use this Complaint Letter template

  1. 1Address a person by name wherever you can find one.
  2. 2State your purpose in the first two sentences — never bury it.
  3. 3Keep paragraphs to three or four lines, in block format.
  4. 4Close with the specific action you want and by when.
  5. 5Sign it, export to PDF, and keep a copy with a reference number.

Complaint Letter: mistakes to avoid

  • "Dear Hiring Manager" beats "To Whom It May Concern", which reads as a form letter.
  • Match the tone to the reader, not to the occasion.
  • Never send an editable Word file for anything that carries weight.
  • Read it aloud once. Anything you stumble over, the reader will too.

Frequently asked questions

What is the correct format for a Complaint Letter?

Sender address, date, recipient address, a salutation naming a person where possible, a subject line, the body in short paragraphs, a complimentary close, and a signature block. Block format — everything left-aligned, a blank line between paragraphs — is the safe default.

Should I send it as PDF or Word?

PDF, unless the recipient asked for an editable file. It renders identically everywhere, cannot be altered by accident, and is what HR and legal teams expect to file.

How formal should the tone be?

Match the reader. Resignation, offer and legal letters stay formal and factual. Thank-you and cover letters can be warm, but never casual — no contractions in the opening line.

Is this template free to download?

Yes. Edit it, export to PDF or Word, and send it — no account, no watermark, no limit on how many you create.