Left a VM just now on my cell phone using the age-old "this is the IRS" robo-call...they are gonna get you because they have discovered you are guilty of fraud, issuing an arrest warrant, etc.  Anyway - if they call you, don't answer. Its definitely not valid - IRS would never robo call anyone and leave a voicemail. Forwarding the message to the FCC. 100% Scam.