急需一商务英语作文

Dear Mr Randy Simon,

I have just received a complaint from a customer. It appeared that he has been sent 100 green bicycles on 16th, November 2009,instead of 50 green and 50 blue bicycles as he had ordered. In order to solve this problem, I need the duplicate invoice of the delivery. Can you pass it to me on Monday? Thanks.

Yours,

xxx