Message from this number states that the IRS has filled a lawsuit. Yay right - scammers!!!

Receiveds a call from this # let my answering machine pick it up since I didn't know the #.  A recorded message stating that the call was from the IRS and it was a final notice that they are filling a lawsuit and to call the # back to get info on it.  Never mentioned a name and never received a notice before so doubt IRS would leave a final notice message.