Write a letter complaining about a faulty product.

Dear

Re: (account number)

This is to inform you that on (date), I (bought, leased, rented, or had repaired) a (name of the product, with serial or model number or service performed) at (location, date and other important details of the transaction).
However, I would like to draw your attention to the fact that your (product or service) has not performed well (or the service was inadequate) because (state the problem). I am disappointed because (explain the problem: for example, the product does not work properly, the service was not performed correctly, I was billed the wrong amount, etc.).

I would appreciate if you resolve my problem by taking specific action (state the specific action you want - money back, charge card credit, repair, exchange, etc.). I am also enclosing the copies of my records (include receipts, guarentees, warranties, canceled checks, contracts, model and serial numbers, etc).

I shall look forward to your reply and a resolution to my problem, and will wait until (set a time limit) before seeking help from a consumer protection agency. Kindly contact me at the above address or by phone at (phone no.).

Sincerely,