This sounded like the very same scam as the 908-652-9176, except the name is now David gray, but same story about an enforcement action" by the US treasury that failure to respond will land one before a grand jury. Doubt this really came from Washington DC....

I got the same call and am sure it is a scam

Received a message 12/5/2015 @ 1;39 from a David Gray mumbling something about an action by the US Treasury and that I must appear before a "magistrate judge". To ignore this message could result in federal criminal charges.  Etc. Etc.   When did we start calling them "magistrate judges"?.  What nonsense.

Missed the caller name, My name not mentioned. Hmmm. threatening call saying IRS building a case against me and that I had to appear before a judge. To call back right away and this was the second attempt. Serious consequences implied if I didn't call back.  "Let us help you". Male monotone voice.

Got the same voicemail from David Gray with same threats. On the same day I got another VM from BOWNE GLOBAL SO (12027414061) but this one was an automated female voice -

"79591. The moment you receive this message I need you or your retained attorney of records to return the call. The issue at hand is extremely time sensitive. My phone number is 202-741-4061. Do not disregard this message and do return the call. Now if you don't return the call and I don't hear from your attorney either then the only thing I can do is wish you good luck as the situation unfolds on you. Goodbye."