Teams Phone Domain Verification - Weeks of Delays Despite Providing All Required Documents

I'm a small business CEO in Germany, trying to verify my domain for Microsoft Teams Phone. I've been stuck in verification for WEEKS despite providing all required documentation multiple times.

Documents Provided:

• Official Namecheap Order Summary (domain purchase receipt from August 2025)
• Official domain ownership transfer confirmation to my company SPONTANEUS UG
• All information requested: domain name, owner, registration date, duration, registrar

The Problem: Microsoft support repeatedly rejects these standard domain registration documents, asking for the same information. The requirements keep changing mid-process, and when I request escalation to a supervisor, the requests are ignored.

Business Impact: I've paid for Teams Phone, but I'm unable to activate it. This is preventing me from making business calls to prospects - directly impacting my ability to generate revenue.

What I Need:

• Someone at Microsoft who can actually read standard domain registration receipts
• Escalation beyond the current support agent, who keeps copy-pasting the same responses
• Teams Phone activation so I can run my business

Has anyone experienced similar domain verification issues with Microsoft Teams Phone? How did you get it resolved?

Any guidance on proper escalation channels would be greatly appreciated. This shouldn't take weeks when I have all the proper documentation from a major registrar like Namecheap.