How do I track down which account is charging my credit card?

Hello,

I understand that you can see charges on your Bank statement with AWS reference, and you have also checked all possible AWS Accounts you have, but unable to locate the source of the charges.

In this case, I request you to contact AWS Support with the information of the charges so that we will be able to investigate it.

AWS Support - https://aws.amazon.com/contact-us/

Thank you