Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Sorry to know about this and 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.
If you have further queries with regards to your account and with the billing, you can reach out to the support team at https://support.microsoft.com/en-us/contactus/ and then click on Microsoft 365 and then click Get Home Support and then type in Billing question and click the blue button that says Sign in to contact Support and login and proceed from there.