Austin Parker,
1234, West 67 Street,
Carlisle, MA 01741,
(123)-456 7890
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear Austin Parker,
We at BC FINANCIAL would like to send our apologies for the error made on your account last month. Instead of crediting your actual payment of $175, what appeared was a payment of $260. Adjustments have already been made and the correct details are reflected on your statement for this month. Thank you for your understanding.
Sincerely,
Donnelly