1234 Archer Road
Gainesville, Fl 32607
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear Justin holloway,
I really apologise for the mistake of sending you a wrong sized blazer. Such kinds of errors rarely occur, but then do happen sometimes. Anyway, we have tried to rectify our mistake, and have sent you a new piece. I have even sent you some material to package, so that you can send the old one to us.
I am also attaching a 30% reduction promo coupon, so that you can buy at a cheaper price for us the next time.