Dear Felix
We are in receipt of merchandise shipped to us pursuant to your invoice or order number [#], dated [month, day, year].
Certain goods as listed on the attached sheet are defective for the following reasons: [Describe]
Accordingly, we reject said defective goods, demand credit or adjustment and intend to re-ship said goods to you at your expense.
Please confirm credit issue and issue instructions for return of defective goods.
By:Lydia