Who is using this number?

I've been getting calls from Santa Anna, (above), Riverside, (951-777-2505) and today, Sacramento, CA,(916-282-6934).
This last number is for someone posing as an agent of Microsoft.  Claiming Mt computer is generating errors in the network and Microsoft has notified them to correct the problem.  It's a scam, they will use you to give them control of your computer then copy important date, install malware, etc.  Just hang-up.  Microsoft does not send agents to solicit calls on the public.

These first two numbers never responded when I said hello.  Now I just ignore the calls.  Been calling two to three times a day.