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.
A lady with a think accent called my business saying she was having a wedding out of the country and asked about my services. Seemed fishy. She said the wedding was in China.