Hi Whitney.  I just did some research myself and found a site that answered the question.  I and others did get voice mail about being a lawsuit being filed against "me" (they didn't give a name just "filed against you").  Its a NYC number (as you probably know but I live in Chicago so I had to look it up).  They give a call back number that seems to vary.  The recording is that it's the IRS who is filing suit and to call back immediately.  Our local TV station here just did an expose on this and it's a scam.  The IRS will ALWAYS contact via mail or in person (If necessary).  Just so you know in case they call again.