I got a call like this and I called them back, and I spoke to a guy who was Indian. He didn't even have my name, so I asked if he didn't know my name, how could he know if I owed the IRS anything? That kind of threw him and he started being all stupid with me, telling me how I was going to have to go before a judge if I didn't deal this matter. I told him that HE was going to have a legal problem if he called again as I am on the National Do Not Call list....he swore at me and hung up. LOL