Miscellaneous topics that do not fit into specific categories.
Log into any Microsoft account you may have on this link, and check the expiry date on your Microsoft 365 subscription to see if that reflects that payment.
https://account.microsoft.com/services/
If not, click Billing on the left, are you able to find the details of that purchase listed there?
If you are unable to find the details of that payment, using any Microsoft account you may have, try using the steps they provide on this link to find out what that payment was for.