Write a letter complaining about the faulty product.

Dear Sir/Madam

This is to inform you that on (date), I purchased (or had repaired) a (name of the product with the serial/model number or service performed). I made this purchase at (location, date, and other important details of the transaction).

Unfortunately, your (product/service) has not performed well (or the service was inadequate) because (state the problem). Therefore, I would appreciate if you take appropriate action to resolve the problem (state the specific action you want). I am also enclosing copies of my records (receipts, guarantees, warranties, cancelled checks, contracts, model and serial numbers, etc) that may be required by you.

I shall look forward to your reply regarding resolution to my problem and I will wait (set a time limit) before seeking third-party assistance. If you have any queries kindly contact me at the above address or phone (phone no.).

Sincerely,