This person is calling say that you have a class action lawsuit against you and you must call them immediately or they will hire a lawyer and have you pay for it. They say they are from justice dept.

They are tools. Apparently they are blitzing the nation today. I got it as well. Only they were saying that I had  unresolved tax liability. It was Dept of Legal Affairs with me.

It appears that I will be arrested at 8:00 a.m. for tax evasion.  Somehow we missed the US Agent who came to our house 13 times to serve us with legal papers.  I laughed out loud.

Total scam.  Originates in either India or Pakistan.  
See:  http://www.irs.gov/uac/Newsroom/IRS-Reiterate ... -Telephone-Scam

Report them:
http://www.treasury.gov/tigta/contact_report_scam_ok.shtml
IRS does not file lawsuits.   Court action, if any is handled by the DOJ and all parties are entitled to legal assistance if it is a criminal matter.  But--tax disputes are for the most part civil matters.  90% of all IRS tax disputes are settled administratively.  IRS has absolutely no authority to call on local law enforcement for anything. Local law is never involved in IRS tax disputes. It has no powers of arrest.    If LE is necessary, US Marshals do the job.  IRS does not cold call anyone and ask for money. IRS does not accept Green card money paks for payment in any case.  No one is prosecuted for ordinary tax disputes. IRS has absolutely no authority over anyone's professional license. Professional licensing is handled by state governments.  Yes, levies on property to satisfy an existing tax obligation do occur, but only after a very long period of negotiation. And yes, liens are placed on individuals but  usually after a lot of negotiation and a failure to reach a settlement.    All determinations of tax liability are subject to appeals.  All  contacts by the IRS are initiated by US mail.

Received three calls in a row from them. Irritating!!