This number called me but it came up as 1-212 on the caller ID. He said he was calling on behalf of Microsoft. I asked the name of the company and he said it was called "I-squared" in Dallas, Texas. I asked how he got my phone number--he said it was provided by Microsoft which seems very unlikely. After explaining that I didn't have a home computer, and that I worked for the government, he hung up.
It looks like this Microsoft company made the switch to IRS collection. Or more likely, a scam:
Action which is being executed by the US treasury department regarding a tax fraud against your name. Ignoring this will be an intentional attempt to avoid initial appearance before magistrate judge for(?) ... jerry(?) for a federal criminal offense. So before this matter goes to the federal claims court house or before you get arrested. Kindly call us back on our number as soon as possible. The number to reach us is 972-591-8183. Let me repeat the number it is 972-591-8183. Hope to hear from you soon before the charges are pressed against you. Thanks."