I just got a call from this number with a robotic voicemail stating I had a legal petition notice concerning tax fraud against my name. I called them back, and they asked for my name and last four digits of my social security number. I kindly replied,"no sir, I will not provide you with my social security number, because I do not feel safe providing my personal information over the phone"... he then called me a bowl of s*it and hung up.
Caller: 202-621-0639