caller shows as unknown and did not leave any messages,

Number 278.533.1193, has flooded my phone with calls today and no message was left. Phone number is in Michigan and states that on the caller ID.  We can put a man on the moon but have no privacy in our own homes with the many calls I get daily.
Also got calls from other unknown numbers and no one is ever at any of the numbers when I answer.

Called while I was driving, East Indian accent, claimed from Microsoft and that they were receiving error messages from my computer. I asked where he was calling from and he said Tampa bay (I'm from Tampa bay so I knew by the area code that this wasn't true). I asked him what was the list of error messages and he couldn't tell me what they were, also asked what license keys I had that was throwing the errors and he just kept asking me to turn on my computer. At this point I said to myself lets have some fun, so I asked him how many computers I had, he sounded surprised that I had more than one, so I asked him what operating system I was using that was throwing the errors, once again, couldn't tell me (guessed from his a*** I suppose). Told him that I have multiple computers with multiple operating systems and that I have a firewall that I strictly control what access the internet, in which he asked me to turn on my computer. At this point I asked for the manager, which I'm sure he just handed the phone over to someone else doing the same thing as him because, I was once again asked to turn on my computer, so I obliged and "turned on my computer" then was asked to look at the keyboard and find the "C T R L" key, this is when I lost it and burst out laughing...told him that I was the CEO of a major multi million dollar corporation (not really, just a Navy Submarine Sailor), my left pinky has more knowledge of computers/microsoft than he did and that my number is on the national do not call list, then hung up...was a good laugh for about 10 minutes though

Told him i am on the do not call list and to stop calling this number!

Feb 26 caller with East Indian Accent claimed from Microsoft, receiving error messages from my computer.   I asked for a callback number and he gave me one that doesn't exist.  He thought I was using Windows (I wasn't).  Wanted me to press the windows key and R simultaneously.  I recognized it as a scam immediately, and played along to find out what woud happen.  He got frustrated, swore an obscenity and hung up.