Impersonate to be an IRS agent and attempt to scam your personal identification and money.

IRS Scam:

The IRS does not need to sue anyone.  They send you first class letters delivered by the Post Office.  Several of them.  Ignore those, and they then send certified letters that you need to sign for.  Again delivered by the Post Office.  Ignore those and they simply freeze your bank accounts and anything else you own.  If they can do that, then why would they bother with a court case that might take them years before they get in front of a judge?  They also do not bother arresting people for a few thousand dollars for the same reasons I have already given.

Official IRS Government site detailing this scam and providing links to report it:
http://www.irs.gov/uac/Newsroom/IRS-Warns-of-Pervasive-Telephone-Scam

If you feel you SSN has been compromised, in addition to putting a fraud alert at the 3 credit bureaus, you may want to notify the IRS.  Here is the link, fill out the proper form (probably 14039):
http://www.irs.gov/Individuals/How-Do-You-Rep ... aud-Activity%3F

CLAIMING TO BE AN IRS AGENT

I received a call from this number today, I returned the call and I asked for the person ID, supervisor, email address and few other things, he's response was, get this ( you wont have [***] ) I even had my daughter listen to it, it was hilarious. I then thank him and said go screw your mom, he hung up on me, what I jip I had more.

IRS scam. Left a message that I am about to be arrested. Doesn't seem to know the address (just name and phone number).