Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
If it is Microsoft 365 Business subscription, you may contact phone support for further assistance. See: https://learn.microsoft.com/en-us/microsoft-365/admin/get-help-support?view=o365-worldwide#phone-support
For Microsoft 365 Family/Personal subscription, you can request a call back. See https://support.microsoft.com/en-us/office/cancel-a-microsoft-365-subscription-46e2634c-c64b-4c65-94b9-2cc9c960e91b