View the list of Sample Business Letters Apology for Overshipment Disclaimer: Be aware that some of these sample letters have legal, financial, or other implications. If you are not sure about the use of any letter, consult with an appropriate professional first. Apology for Overshipment Dear 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.