Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
1
Log into any Microsoft account you may have on this link, do you find the previous subscription linked to any of your Microsoft accounts?
https://account.microsoft.com/services/
If you find the previous subscription, select it and click Manage.
From there, you can cancel that subscription and also ensure you disable any recurring billing on the subscription to avoid any further charges.
2
If you are unable to find the subscription, using any Microsoft account you may have, try using the steps they provide on this link to find out what that payment was for.
2
If you are still unable to resolve that payment problem, this forum is just a user to user forum, no-one here has any account access, you will need to contact Microsoft Support directly, try using this method to contact their support.
Go to this link: https://support.microsoft.com/contactus
Select Microsoft 365
Click 'Get Home Support'.
In the box provided, type billing.
Press Enter, then on the next page, scroll down and click 'Sign in to Contact Support'.
Navigate to Microsoft 365 and Office - Manage my Subscription.
Select the 'Chat with support agent in web browser' option