[URGENT] Sole Global Admin MFA Lockout - No escalation after 7 days (Ticket #2609050040000232)

Hello,

I'm dealing with a critical "Sole Global Administrator MFA Lockout" scenario for one week now, and standard ticket support is taking 24h per reply with no effective escalation so far.

Ps: I had to use my personnel account to login because my business account is unavailable!! 

PROBLEM SUMMARY:

After switching phones, the only registered MFA method (Microsoft Authenticator) became orphaned. There's no MFA backup method and no working second admin account on the tenant. As a result, I'm locked out of:

- Microsoft 365 Admin Center login

- Microsoft Entra Admin Center login

- Corporate email and Teams access

WHAT I'VE ALREADY TRIED (unsuccessfully):

- Deleting the broken MFA method (error: "delete operation failed")

- Enabling and generating a Temporary Access Pass (blocked - admins cannot generate a TAP for themselves, and the second admin account is also affected by the same broken MFA issue)

- Checking for account lockout status (not the case)

- Error received during sign-in attempts: Error Code 500121

OPEN TICKET:

Ticket #2609050040000232, open for 5 days now, only generic responses received so far.

REQUEST:

Could someone from the Microsoft team (moderator, MVP, or any direct contact) help escalate this to the Tenant Recovery / Data Protection team? I'm available to prove tenant ownership (domain control, subscription details, billing information).

Any guidance on how to expedite this specific type of case would be greatly appreciated.

Thank you.