________ (Client’s Name),
________ (Client’s Address),

Date: __/__/____ (Date)

Subject: Notice of Unauthorized Repairs

Dear ________ (Client’s Name),

I am writing to inform you about an issue concerning your recent ________ (car/scooter/bike/truck/other) repairs conducted at ________ (Workshop Name). As per your request, upon thorough inspection, it has come to our attention that certain repairs performed were __________ (not authorized/wrong parts use/cheaper products replaced/other).

Please find enclosed the details of the incident and any supporting documentation. Please review the information provided, and if you have any concerns or would like to discuss this matter further, feel free to contact us.

Thank you for your understanding.

________ (Your Name)
________ (Your Position)
________ (Workshop or Company Name)
________ (Your Contact Information)