No matter what I try on Amazon, I cannot find my Prime Video payment history.
Just to clarify, I don't subscribe to Amazon Prime because we're not allowed to have deliveries here, so we just pay monthly for Prime Video.
However, my experience with looking Prime Video payment history simply has me going around in circles leaving me with the impression that this information cannot be accessed.
Posts on Reddit and Amazon forums back up this statement and I find it most peculiar.

Payment history
byu/thewallrus inamazonprime

https://www.amazonforum.com/s/question/0D54P00007JKgYq/where-do-i-find-my-prime-video-order-history-the-orders-do-not-appear-in-my-orders-on-my-amazon-account

The point is, every area of purchases I go to brings up ZERO purchases and because we are being overcharged, I'll be cancelling all and any credit cards currently on the account.