Got a call this morning with the same threatening information.  I told them to send me a bill and I would take care of it.  Immediately the caller hung up.

I also just received a call from this number. They had my name and address as well. They said a "case" had been filed against me and asked for my attorney's contact information. They even had a "reference number" for my case.  These scams get very sophisticated.

It seems they are also using 415-230-2668.

Hey Captain Insano,
These scumbags deserves all the expletives you can think of. Can you give them few more times on my behalf? They call and leave a horribly accented message. They must be of lowest level IQ and from a different planet to even think others will be fooled by their crude pranks. Usually I ignore them hoping they would wise up. But it never stopped. Maybe, your prescription from all will help them to wise up and stop.

Rec'vd a call from this number stating that I owed the IRS money and indicated a deputy will be coming to my home to arrest me unless I hire an attorney and I have reported that i make less money then i reported.  Funny thing is I dont make any money I am retired - then i asked for the last 4 digits of the SSN and they proceeded to to tell me a number and hung up...