Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello Steve,
Thanks for your question. My name is Bill and I am happy to help.
To cancel your subscription to Microsoft 365, follow this link, https://account.microsoft.com/services/microsoft365/billing which brings you to the Manage Subscription page. Login with your credentials and select Cancel Subscription.
If that doesn't work, take a look at this article by Microsoft Support that has detailed troubleshooting instructions: https://support.microsoft.com/en-us/office/cancel-a-microsoft-365-subscription-46e2634c-c64b-4c65-94b9-2cc9c960e91b
Let me know if I answered your question, or if you have additional questions. Thanks.