I got the same call from them, talking about that i owe IRS, AND I told them that I do not owe the IRS, and he said that I should prepare for the police to come to my door , and then he hung up.
Guy calls and says his name is Alex Marshall has a middle eastern accent number was 773-269-3236 his badge number gs1686 it's a scam don't give any money to these people report it to the irs
Just happened to me just now... well ill call back just to entertain them to see what happens im sure the IRS was looking for me they would send a letter in the mail first and then send one to my job to let me know what they can do.