Dear Mr. Steward,
We received the goods you sent us via lorry transport (d/o 12345) yesterday. When we checked the goods, we found that you have sent us some wrong goods.
If you would check our order (No.1234), we had asked for 3 dozen cans of A1 Tomato paste. Instead you sent us 3 dozen bottles of A1Tomato sauce.
We have ample stock of Tomato sauce but urgently need the Tomato paste. So we are returning the Tomato sauce to you. Could you send us the Tomato paste as soon as possible? Please give us a c/n for the wrong goods.