I got the same robot call twice today to ask me to call back. When I called back, the guy with Indian ascent greeted with "IRS". He also asked if I have a lawyer to represent me. Since I am a tax professional and own a tax practice, I told him no and would like to understand what charges were against me. He told me the case # with the court (no court name or claim details), and how multiple notices were sent to me (with dates) with no response. He also couldn't resend those notices since it is now with the court. However, he could read to me about the charges. He didn't asked me to pay anything at that time.
I told him that I will call back with my husband. 2 minutes later, an "American" answered the phone. Pulled up my records with my name and phone #, but couldn't answer any question and was just silent whenever we ask him any questions. (Probably a newbie in scaming.) He then transferred us back to the original guy, and we never heard from there...
We hung up and there was it.