How to Delete Your Amazon Account
Closing your account and creating a new one is the only way to erase your Amazon purchase history. However, you can “archive” some of your orders to make them less visible in the list of previous purchases.
Tell Amazon’s customer support staff you want to close your account and provide a reason. Follow the instructions Amazon emails you to confirm you actually do want to close your account. Amazon will then close your account and you’ll be free to make a new one with a fresh purchase history, if you like.