This is a scam from India. The caller states his name to be Agent Kevin Marshall from IRS badge number 1953A. His accent as thick as god knows what, and you can hardly understand most of what he's saying. He ends the conversation with god bless after he tells you (sorry threatens you) that if you do not call back that you will be responsible for the legal ramification. IRS doesn't have people from India call you, and if they are hard pressed, yes indeed they'll send you a mail notice followed up with people showing up at your door if they get really desperate. DO NOT call them back, it is a scam. They are calling from a 202 number, if in doubt look up the actual IRS phone number and call them.
North Carolina Mar 18th, 2015