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 $50.00 or so.

Called at 6:32 am left message for you or your attorney of record to call officer Julie Smith @ 415 506 2391 from the federal government and to call before action is any taken This is the 3 call from them.

Put in a ring tone with no sound use voice recorder to do so it is cheaper

Scam irs caall

Called 2x today saying from IRS...did not answer or return call...reported to local PD however.