Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi @Stephen Bryant
From what I understanding, this appears to be an administrator account MFA lockout scenario. If there are no other Global Administrators in the tenant who can reset your authentication methods, you will likely need assistance from Microsoft's Data Protection Team. They are responsible for reviewing account recovery requests, validating tenant ownership, and determining available recovery options.
Since you've already tried calling Microsoft Support, could you clarify whether you're unable to get past the automated AI phone system, or does the call disconnect before you can reach a live agent?
If the issue is with getting through the IVR system, you may want to try again using the approach below. Based on my experience and several similar cases I've seen, the following script may help route your call to the correct team and eventually connect you with a live representative:
(When you call the support number, you may hear an introduction for about 30 seconds, such as "you can visit the link...". You can ignore this introduction and wait until the menu options are presented. Then press "1" for business email users, and press "1" again for technical support.)
IVR: What kind of problem are you concerned about?
You: Authenticator.
IVR: What kind of product do you use?
You: Office 365 for business.
IVR confirmation: education or company account?
You: For companies
IVR: Are you an administrator?
You: Yes.
IVR: Do you have another administrator in your organization?
You: No.
IVR: Do you need a... Service request?
You: Yes. I need to create a ticket. Please send me directly to the Data Protection Team.
Note: Before proceeding, you should prepare any relevant information that may help prove ownership of your tenant, such as billing information, subscription details, domain ownership, recent invoices, or any other account-related information the team may use during the verification process.
You can start by calling your regional Microsoft support hotline here: Customer service phone numbers - Microsoft Support
You could give this a try and let me know the result. Hopefully, it will get you connected to a live agent who can assist with the verification and recovery process.