DO NOT GIVE ANY CALLER FROM THIS NUMBER PERSONAL INFORMATION.  IRS SCAMMERS!!!!
JUST HANG UP!  Someone call my client from this number and told her that all of her tax returns were filed
wrong, she told them she would have me call them.

I just got a call from these idiots. The IRS does not make calls like this so just hang up and report it.

Scam. Their robo-caller is so unsophisticated that it started its b***s*** shpiel while my answering machine was still giving out the greeting.

Indicated I had commited tax fraud and wanted my home.

There is a widespread IRS (or CRA) or "tax scam" being  practiced by scammers on both USA and Canadian residents.

USA tax payers should read this:
http://www.irs.gov/uac/Newsroom/Phone-Scams-C ... 5-Filing-Season

Canadian tax payers should read this:
http://www.cra-arc.gc.ca/nwsrm/lrts/2013/l131210-eng.html

Short answer:
The IRS never initiates a contact via phone.
They always send a snailmail first.

Educational post:
This scam is also described as scam #11, here:
http://phonehelp.2truth.com/facts.html

If you were contacted by an IRS impostor, you may file a report, after clicking on this link:
http://www.treasury.gov/tigta/contact_report_scam.shtml

UPDATES:
Recent news story:
http://www.wltx.com/story/money/2015/03/12/fa ... -scam/70202814/

Congressional hearing:
http://www.nbcnews.com/business/taxes/tax-imp ... hearing-n341906