I received a call on my cell phone from this number and it was a Credit Card scam. Claims that my credit card rates were going up and I needed to press 9 for more info. Funny thing, my credit card companies do not have my cell number.
I believe they are scammers. They call themselves "Windows Technical Department" and claim they are getting a message from your computer that you have a virus. They are probably in India - they are not even familiar with American phone numbers.
I too got 2 calls yesterday from this number. Same MO as above, heavy Middle Asian accent, vague threats about US Treasury and a Magistrate. I would think if I was in trouble with the US Treasury Dept, I would have received an official notice in the mail. My guess, it is a scam, and if you call back they will want money wired to them to stop the legal action (which is phoney anyway) Seriously, if one was in trouble with the US Treasury, don't you think you would know about it??