Write a letter complaining about a product.

Faulty (xyz) product

This is to bring to your kind notice that the enclosed (name) product doesn't work and it is not up to the expectations. I am sorry to inform you that it is the third product that I've had to return this month (see attached correspondence).

I would like to inform you that I bought the product from the (name of shop) at (name of place, ex. Fifth Avenue, New York) on (date). I must inform you that I carefully followed all the instructions for use. However, except these few products that I have had to return, I have been otherwise completely satisfied with your products.

I would be grateful if you could send a replacement and refund my postage (state amount).

I will really appreciate your help.

Yours faithfully

Signature