This number called my phone six times today leaving one message for what sounded like my 10,year old son.  When I call back they didn't ask my name or anything but told me there was a claim against me.  She was really hard to understand (foreign) and said something about my taxes.  I told her she was a fraud and that I was reporting her before I hung up.

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.

I had a miss called from this number s o I called it back a lady answer I told her who I was she told me to hang on I can hear a man in the background talking to someone else like he was reading from a paper (when the lady answer the phone she didn't say what company they was she answer like you would you house phone) so after a few mintunes the man gets on the phone to tell me I have a case with IRS for fraud from 2008 to 2010 that I need a lawyer and he was given my case for me to settle with him I told him I don't have a case with them he told me I was lying then got upset cause I didn't want to pay it off with him and told me that he was going to send the police to my house tomorrow morning and hung up after that.