Who called from 4152349863

I did call back, got some way old lady said she was an "officer". After 1 minute she hung up. I called back several times, each time answering and hanging up. One time she did not hang up but thought she did (like a butt dial), heard lots of phones ringing and "IRS", IRS in the background. Seems to be a very busy place.

Well, because your callers are hard core Indian or Pakistani scammer/extortionists and as such ignore all US laws.  Like any good criminal will do.  You can protect your self with a call blocker.

Total scam.  Originates in either India or Pakistan.  
See:  http://www.irs.gov/uac/Newsroom/IRS-Reiterate ... -Telephone-Scam

Report them:
http://www.treasury.gov/tigta/contact_report_scam_ok.shtml

IRS does not file lawsuits.   Court action, if any is handled by the DOJ and all parties are entitled to legal assistance if it is a criminal matter.  But--tax disputes are for the most part civil matters.  90% of all IRS tax disputes are settled administratively.  IRS has absolutely no authority to call on local law enforcement for anything. Local law is never involved in IRS tax disputes. It has no powers of arrest.    If LE is necessary, US Marshals do the job.  IRS does not cold call anyone and ask for money. IRS does not accept Green card money paks for payment in any case.  No one is prosecuted for ordinary tax disputes. IRS has absolutely no authority over anyone's professional license. Professional licensing is handled by state governments.  Yes, levies on property to satisfy an existing tax obligation do occur, but only after a very long period of negotiation.  And usually a lot of appeals.   All determinations of tax liability are subject to appeals.  All  contacts by the IRS are initiated by US mail.

I just started getting calls from this number also...but its a recording, guess I am not fortunate enough to get a real person so sick of all these scammers, payday loans i never took out, IRS, lawyers etc...get a job!!!!!

I also received this call from the "IRS" today.  Her name was still Julie (Judy?).  She gave a last name, but I missed it.  As with many of you, it was a recording, telling me she was with the IRS, and that we had to call back urgently or the IRS would take strong action.  And that we must not ignore the call.  She finished with the 'take care' ending.
I went to the IRS website and ended up at http://www.treasury.gov/tigta/contact_report_scam.shtml and reported it.  I do not like that I had to put my name, address, email, and phone - I mean, that's part of what I'm avoiding.  I did anyway (hopefully using [email protected] won't be a problem).  In the yellow bar near the top of the page is a read more link which gives more info on these calls.  But that was a year ago, and looking at all the recent reports on here, it might be getting worse.