Got the same message today..called the number back from a different phone and after about 15 rings was answered by a foreigner saying he was IRS Agent something, how may I help you. Knew it was a scam just wanted to see if the number was answered. They called my Cell number..I was hacked last year at IRS.
Received a call today with a message regarding a criminal case I was involved in being entered into the Federal Claims Court House. Also the caller wanted the name of my retained criminal attorney. Since I had no such case, I did not respond.
I took the call and had fun with them. they are not the IRS. Its just a scam. so since 1000 am today till 400pm, I have called them, fax them. just to make them upset. just have fun and don't get you blood pressure up. its a scam!!