Caller Id says US Govt.?  The first time it said US IRS.  Message left said there was a law suit filed against you, as in generic you.  Left a number to call back, leave a recorded message and your SS# and that of your spouse if filing jointly.
What a bunch of idiots.  These must be the idiots from a foreign country in Nigeria.  Everyone knows if our Government wants us they will eventually get us at our place of employment.   My guess is they are hoping for very Senior or SSD people or young people or anyone who might vulnerable. This could include us, depending on who is home. They might get lucky, and they think we are all stupid over here.  A Village is definitely missing one of their idiots.  Sorry for the rant but getting really tired of not being able to answer my  line, then doubling back and telling everyone not to pick it up.  A robot answers our calls.  On the do not call list and don't think this matters. 201-435-3055...don't bother, if it is our Government they know how to find all of us. Just tired of this.  Called several times yesterday and today.  We haven't answered once. They still call with a recorded message, but they do not always leave a message.  Hope this helps.