SCAM - ANOTHER FAKE IRS phone caller ...we're going to press charges against you and arrest you phone call.  Already reported this phone number to the IRS.

http://www.irs.gov/uac/Newsroom/IRS-Reiterate ... -Telephone-Scam

If you get a phone call from someone claiming to be from the IRS, here’s what you should do:
If you know you owe taxes or you think you might owe taxes, call the IRS at 1.800.829.1040. The IRS employees at that line can help you with a payment issue, if there really is such an issue.
If you know you don’t owe taxes or have no reason to think that you owe any taxes (for example, you’ve never received a bill or the caller made some bogus threats as described above), then call and report the incident to the Treasury Inspector General for Tax Administration at 1.800.366.4484.
You can file a complaint using the FTC Complaint Assistant; choose “Other” and then “Imposter Scams.” If the complaint involves someone impersonating the IRS, include the words “IRS Telephone Scam” in the notes.