Simply replace the unfilled areas such as "" and "[date]" with your information.
Please accept our apology for having shipped merchandise in excess of your purchase order.
We have made an adjustment in your account to reflect this error and have arranged for [delivery service] to pick up
the excess merchandise on [date].
We are sorry for the inconvenience this has caused you and are most appreciative of your cooperation and understanding in this matter. Thank you for your recent order.