How to Write an Effective Complaint Letter

A well-written complaint letter is your most powerful tool for resolving finance disputes. Finance companies receive thousands of complaints, but those that are clear, well-structured, and evidence-based are far more likely to succeed.

Essential Components

1. Your Details

• Full name and address
• Account number or agreement reference
• Contact phone and email
• Date of birth (for verification)

2. Clear Subject Line

• "Formal Complaint: Mis-Sold Finance Agreement [Account Number]"
• "Section 140A Complaint: Unfair Credit Relationship"
• "Affordability Complaint: [Product] Finance"

3. Chronological Summary

• When you entered the agreement
• What you were told vs. what happened
• Specific dates and events
• When you first realized there was a problem

4. Specific Complaints

• Inadequate affordability assessment
• Misrepresentation of product/terms
• High-pressure sales tactics
• Failure to explain key terms

5. Legal Basis

• Reference Consumer Credit Act sections (75, 140A, 56)
• Cite FCA regulations if applicable
• Mention relevant case law if you know it

6. Evidence

• List all attached documents
• Reference specific evidence for each point
• Include bank statements showing affordability issues

7. Impact Statement

• Financial hardship caused
• Stress and inconvenience
• Credit score damage
• Any vulnerability factors

8. What You Want

• Be specific: full refund, debt cancellation, compensation amount
• Give a deadline for response (8 weeks is standard)
• State you'll escalate to FOS if not resolved

Tone and Language

Do:

• Be professional and factual
• Use clear, simple language
• Stay calm and objective
• Be specific with dates and amounts
• Reference regulations and laws

Don't:

• Use emotional or aggressive language
• Make threats (except legitimate legal ones)
• Include irrelevant personal details
• Ramble or repeat yourself
• Use jargon or complex legal terms incorrectly

Common Mistakes to Avoid

• Too vague: "I was mis-sold" isn't enough - explain exactly how
• No evidence: Attach bank statements, agreements, correspondence
• Wrong recipient: Send to the complaints department, not customer service
• Missing deadline: State you expect a response within 8 weeks
• No follow-up plan: Always mention escalation to FOS

Example Opening

"I am writing to make a formal complaint under Section 140A of the Consumer Credit Act 1974 regarding the mis-selling of a kitchen finance agreement (Account Number: 123456789). I believe the credit relationship is unfair due to inadequate affordability assessments and misrepresentation of the product quality. I am seeking cancellation of the remaining debt and a refund of all payments made."

Sending Your Complaint

• Method: Recorded delivery or email with read receipt
• Keep copies: Of everything you send
• Follow up: If no response in 2 weeks, chase
• Document everything: Dates sent, responses received

A well-crafted complaint letter demonstrates you're serious, informed, and prepared to escalate if necessary. Finance companies are far more likely to settle when they see you know your rights.