Claims to be IRS and Urgent

Got several phone calls from the number claiming to be the IRS and that I have a warrant out for my arrest for tax evasion and that I need to send monies to the court in order to avoid being arrested, and that today is the last day to be able to set up some typle of arrangement.

had 2 missed calls on a number that no one has (I never use this phone) and 1 voice mail left just saying that it was important I call back on time-sensitive issue, didn't say who it was or who it was from. Has to be scam.

Rec'd same IRS threatening msg

Got the call just 5 minutes ago. was a recording and said it was from the IRS and it was time sensitive to call back.  called the number back and got busy signal. scam! don't answer and don't call back!