Valid Microsoft phone number?

[Grizzled]

Wondering if anyone knows a valid number for microsoft. I reformatted my rig for a clean up. Broke the raid on my SSd's to run dual boot linux(unbuntu). Windows does not recognize my code key for validation. Yes some of us actually paid money for windows products. Microsoft was wise to not even put a phone number on their website. Anything I looked up on the web for a phone number for them seems to be a scam number when looked into deeper. Im willing to jump to linux, but i would rather make sure I can get all my hardware working first.