How can I return an unwanted book from Amazon for credit without a receipt?

Customer context: The customer received a book from Amazon without a receipt and wants to return it for credit.

Customer: How can I return an unwanted book from Amazon for credit without a receipt?

Answer: Unfortunately, we are unable to help you with this issue as we are not affiliated with Amazon. We are QualityUnit, developers of Post Affiliate Pro and LiveAgent. Please contact Amazon's customer support for assistance with your return.