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1. Sender's Details: Full name, address, contact information, and any relevant customer/reference numbers

2. Recipient's Details: Name of the company/service provider, relevant department, full address

3. Date: Current date of writing the letter

4. Subject Line: Clear indication that this is a complaint regarding repairs, including any relevant reference numbers

5. Introduction: Brief statement identifying yourself and the service/repair that was provided

6. Problem Description: Detailed explanation of the issue with the repairs, including dates, specific problems, and impact

7. Previous Contact: Summary of any previous attempts to resolve the issue, including dates and names of people contacted

8. Expected Resolution: Clear statement of what you want done to resolve the situation

9. Closing: Professional closing with a specific timeframe for expected response

1. Photographic Evidence: Photos showing the faulty repairs or resulting damage

2. Original Repair Invoice: Copy of the invoice or receipt for the original repair work

3. Expert Assessment: Any third-party evaluation of the faulty repairs

4. Previous Correspondence: Copies of any previous emails, letters, or documentation of communication

5. Warranty Documentation: Copies of relevant warranty certificates or guarantee documents