Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello, good day and thanks for your question. Sorry to know about this and I understand that you are looking and trying to cancel your Microsoft 365 subscription.
If you are unable to recover your account specifically if the options for it is not available or it has already been exhausted as that can get you to cancel the subscription from there, the next thing that you can do is to reach out to the bank to block future transaction related to the subscription or replace your card as or if needed to avoid additional or future unwanted charge/s.