The number called me three times. When I say don't call back they did what? And laughted.

I have received several calls from this same number this has been going on for over a week. Same voice can't understand what he is saying.  I tried to be nice to stop the calling and they will not listen. They wanted my name which I would not give, I said you have my number erase it that's all you need to know. They then hang up and call you all day again. I advised I kept their number in my phone and hopefully I will find the company that locates them and they have to pay me for the aggravation  of the telephone calls we going through, day in and day out.

http://www.irs.gov/uac/Tax-Scams-Consumer-Alerts
http://800notes.com/forum/ta-8c2f64bf2b91fa5/irs-warns-of-telephone-scam

Report the Calls to the real IRS here:
•report the incident to the Treasury Inspector General for Tax Administration at 800-366-4484.
•You can also file a complaint with the Federal Trade Commission at FTC.gov. Add "IRS Telephone Scam" to the comments in your complaint.

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Do consider maybe getting a call blocking device or phone.. You can google them and many are around $60.00 or so.

Got a call from this # 312-724-5786, he asked if I need any personal loan when I said I don't need any loan he became very disrespectful and nasty on the phone and started cursing in Hindi, since I understand Hindi I replied back in Hindi than he hanged up, he was based in India big time scamer, also got similar call last month.

They call never answer 312-724-5786