Complaint Review: Department of Legal Affairs US Treasury

Got a call from my old home number asking for me to call a Roy Jackson back at 760-600-7301 in regards to IRS.  I called the number 3 times before I was connected with a Rosa Gilbert, stating she was with the Department of Legal Affairs of the U.S. Treasury.  Calling about a neglected bill and was going to issue a warrant for my arrest as soon as I got off the phone.  I asked for what tax year, how much, case number, and she was starting to get impatient and rude.  She hung up on me when I informed her I was asking a relative for any notices from the IRS, stating that I was not allowed to tell anyone about this phone call.  I am getting contact with the IRS to figure out what is going on.  If this is a scam this is scary way of trying to get money.