Voicemail from (732) 347-8794
"Hi my name is David Gray and this message is intended to contact you regarding an enforcement action executed by the United States Treasury intending your serious attention. Ignoring this will be an intentional second attempt to avoid initial appearance before magistrate judge or a grand jewelry for factual criminal offense. My number is 732-347-8794. I repeat it's 732-347-8794. I'd like you to cooperate with us and help us to help you. Thank you."
I got the exact same call. I tried to block caller ID with *67 and then called the David Gray number, but the person with a south Asian accent who answered knew my name immediately. My advice is to not call back no matter how curious you may be. If you want to have fun with them, call from another phone than can't be traced to you.