Dear Mr. Morgan,
I had bought the XYZ Baking Product, receipt number 123445 from your Company on 20th June. I regret to inform you that the product is defective and my numerous verbal complaints to your personnel have yielded no results.
I request you to either replace the product with a functioning new product or refund my money within one week.
I have never been let down by any of your products in the past and I look forward to your immediate action on this occasion.
I am enclosing a copy of the Receipt to help you initiate immediate action.