23rd August 2010,
Mr. James Austen,
Global Company Inc,
22nd Hill Avenue
This is reference to the order sent to you. I would first like to apologize for the wrong shipment sent to you. As per you purchase order, you ordered 40 cases, though we have sent you 60 cases.
I would like to put two options for you, as per your convenience please chose among them. First is, you can buy the extra 20 cases and we will bill them to you thirty days from now. Or, the second option is that we arrange a pick up at your loading place and issue a credit to you. Let us know whichever option is more suitable to you according to your suitability.
We also assure you that these mistakes would not be repeated in future anytime. Thank you for your cooperation. Should you require any further assistance, do not hesitate to contact us.