Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello St Augs Admin
Thanks for contacting Microsoft forum community, pleasure to assist you with the above query.
If the account in question is the only admin account, we sincerely recommend that you contact our dedicated data protection support team directly via phone support on business days (Monday to Friday) and times: (select your country's region code):Find Microsoft 365 for business support phone numbers by country or region - Microsoft 365 admin | Microsoft Learn or Global Customer Service phone numbers - Microsoft Support. They are the only responsible and privileged support team for account related queries. While phone call, press "1" as business email user and press "1" again as technical support. You also need to provide your subscription purchased information such as company name, billing information, phone number, alternative email address etc. So, our data protection team can assist you in resetting your multifactor authentication and once reset you will gain access to your admin account. Our Data Protection Team will ensure that your organizations data is secure and will remain private.
Thank you for your cooperation and have a good day.