Do not answer calls you don't know and never call them back. The IRS will not call you. The IRS won't ask you to pay in i-Tunes cards. The IRS will not wish you "good luck as the situation unfolds". Trust yourself and your instincts - do not let a bully intimidate you by threats that are nothing but hot air.
That 'good luck as the situation unfolds' is great. These thieves are so dumb to leave something as awful as that. It's very sad folks are duped into believing something as stupid as it is.
My husband got this call on a Saturday morning claiming to be from the IRS that there was a warrant for his arrest for tax evasion. When we asked for their information and questioned them more they hung up. Don't fall for this and as others have said, don't give them ANY personal info...MAJOR SCAM!!!