Amazon website on a computer
Account under the Account & Lists menu
My Transactions
find the matching dollar amount and date and then click on the Oder Number to see what the charge was for
or
contact Customer Service (this is not it) and have them check for you – they are the only ones who can access your account:
https://www.amazonforum.com/s/question/0D56Q0000BjlCFPSQ2/faq-how-to-contact-customer-service