Last I was aware, lawsuits are usually noted by other means that have protocols on how someone is notified and not by way of leaving cheesy voicemails stating so......
I got a recorded message saying the IRS wanted to talk to me. I called the number back and got a Somali woman that does not speak good English asking me for a case number. I told her I was not left a case number she asked for my name and social security number I told her no and hung up.