Received a call from this number and didn't answer. I listened to the voicemail about "failure to appear in front of a magistrate judge." I decided to call them back. I asked the woman on the other end "Who is the magistrate judge that I failed to appear in front of?" She hung up on me. I called back several times inquiring who they were representing and to STOP SCAMMING AND THREATENING PEOPLE!!! I also informed her after several instances of her hanging up on me, I will find her location and "appear at her doorstep with a few of my military buddies to straighten my so called 'federal criminal offense' out.