Miscellaneous topics that do not fit into specific categories.
1
Log into your Microsoft account on this link and check the expiry date on your Microsoft 365 subscription to ensure it is indicated correctly.
https://account.microsoft.com/services/
2
If the expiry date is listed correctly, where are you seeing the notification about a payment being due, is that an Email that is indicated as coming from Microsoft or are you seeing that somewhere else?
If that is an Email, please provide full details on the Email you have received, it may be a phishing scam.