This is a prank caller claiming to be from the IRS report this to the FCC as an IRS tax scam

Just now I also got a call on the similar issue.  The caller called me 4 times even though my insistence of not getting conversation with him.  I wish some appropriate authorities should take care.  My phone is on 'do not call list'.  

A lot of these groups are criminal extortionists running of out India and Pakistan.  Not much you can do except complain to authorities and maybe get a call-blocker.  These people are terrorists and should be treated as such.

02/18/2014 I got a message the caller says he is from an Attorney from Criminal Investigation Department of the IRS,says there are serious financial accusations,tax fraud made against me. When i called back the voice mail says it is the desk of Jason Fletcher, Criminal Investigation Department of the IRS.He called me and told if i dont want to be charge nor go to court i have to pay $2,0000 in 45 mins or IRS will send an arrest warrant out for my arrest.This scammer needs to be in jail.I hope the FBI arrest him.

>>> ... caller says he is from an Attorney from Criminal Investigation Department of the IRS,says there are serious financial accusations ... told if i dont want to be charge nor go to court i have to pay $2,0000 in 45 mins or IRS will send an arrest warrant  <<<

Another lying scammer hiding behind an untraceable magicJack number trying to scare you into paying right away without having a chance to verify his threats.  Here's a link to a simple way to check for magicJack numbers:
www.phonevalidator.com

He could be calling from anywhere in the world, but he picked a 202 area code number for his magicJack because he wants you to think he is calling from the IRS.