WRONG ITEMS SHIPPED: PLEASE RE-SHIP
I’m afraid there has been a slight error on our shipment.
Instead of [REQUESTED PRODUCTS, ex. 100 sheets of 8x5 drywall], we received a shipment on [DATE, ex. Wednesday] of [SHIPMENT, ex. 50 sheets of 8x10 drywall]. Enclosed, pleased find [STATE SUPPORTING DOCUMENT ENCLOSURES, ex. a copy of our P.O. #153234] confirming our order. Please check your records to determine whether I am mistaken.
I will be delighted, nonetheless, to receive a re-shipment of our order at your earliest convenience. As I’m certain you understand, the incorrect shipment has caused us delays; we would hence appreciate your expediting our order in any manner possible. [STATE WHAT WILL OR HAS BEEN DONE WITH CURRENT SHIPMENT, ex. Your trucks have taken the original shipment back to your premises.]
Please contact me at XXX-XX-XX if there are any concerns.