Apology to Receiver of NSF Check

When I received your letter of [date] with my check attached marked "insufficient funds", I called my bank immediately.

The gentleman I spoke with, [name] , discovered that the bank had failed to credit my account with a substantial deposit I had made several days prior.

The bank has assured me that they will be sending you a formal letter of apology for their error. Attached is my check in the amount of $ to replace the dishonored one you have returned.