I live in your area and I also got a call saying the guy was with the "Microsoft service center." He said there was a problem with their software that they were going to fix. I said, "Microsoft doesn't work like that. You're a scammer." And hung up. At least he didn't threaten to report me to "the authorities"!
I got another call that was a guy with a very rich "radio voice" saying, "We're offering a free service to paint your house number on your curb for safety, so emergency services can find you quickly! This is a FREE, CITY service! Do you already have your numbers on your curb? Your neighbors do! In your neighborhood many homes do already!" I said, actually, no one in our neighborhood has this. He barrelled on saying, "Don't you want the ambulance or fire services to be able to find you quickly? And this is a FREE, CITY sponsored service!"
Well, I really did have to get out the door and started to say, I have to go out the door now, but can you give me your number (so I could check it out and see if the town actually did back this service), when he suddenly went ballistic and screamed, "Then just go out the door!" and slammed down the phone!
I e-mailed our town government right away to let them know about it and they confirmed that it is not a town service -- in fact it's not allowed to paint anything, even house numbers, on curbs in our town as theyr'e town property. I wish I'd thought to do a reverse call to get the number he was using but I was so thrown by his screaming and slamming down the phone -- even Mr. Microsoft didn't do that.
I am certain that this outfit does turn up and does paint the number for free --then tells you, "Oh, we notice that your driveway is cracked, we can fix that tomorrow if you give us a 'down payment' for materials today" and so on. I've heard of lots of scams about driveway paving and roofing along those lines. Beware of free services, folks, and never believe your city or county is providing something unless it says so on their web site!