Apology for incorrect or late payment
1234, Main Street Boston, MA 02123 03/17/05 <Recipient Address Goes Here> Hello. Enclosed is check number <check number> for <$amount of check>. We apologize for <problem> invoice number <invoice number>. This check should cover the full amount still owed to you on this invoice. We’re sorry if this has caused any inconvenience and thank you [...]