WHAT A SURPRISE! This actually is the Microsoft switchboard. We received a call showing Microsoft Corporation as the caller. I thought, sure it is. Turns out it is a client who works at Microsoft and was returning a call from work. Glad I let it go to voicemail, because I would have been extremely snarky when I answered.
Just received a call from this number and since it didn't recognize it I didn't answer.
I have no idea why anyone from microsoft would be calling me.
Just a wrong number I guess.