HA, called them from a Linc line. Told them I was with the US Treasury and needed their department number. They asked for my name and badge number. After back and forth I told them to stay on the line a little longer, they got nervous and hung up. Total [***] scam job. I bet it goes something like this, "if you post a bond for $50 with a credit card we can take care of your issue." and then game over for your identity.
It appears someone may be spoofing a legitimate number. Man with Indian accent calls, warns that if you don't call back you'll be in trouble with various federal agencies, bench warrants, the whole lot ... and that they can help you. Call hit answering machine, the recording at the other end repeated itself three times ....