Called, but I did not answer.  A female recording left a voice mail stating that the IRS is filing a lawsuit against me and to call this number back for more info.  I THINK NOT!

same as caller above:  called, I didn't answer, threats of an IRS lawsuit - and the best of all - I was to call back immediately!!!

  Same as the caller above, a female recording stating the IRS is filing a lawsuit against me. I called back the number,
 a male with an accent answered, said he couldn't hear me and would call back in 5 minutes.  He didn't call back.

Got a call from 360-255-7375 early morning. Did not answer it. A female left a message, saying something about a case and instructed me to call them back. Did not call back.

Got a call from this number - 2 calls in fact. After they called back I knew it must be important. I called and spoke to Bob. He asked for my social and my credit card number to verify my identity and I gave it to him. I am awaiting him to call me back to confirm what the heck is actually going on.