Message left on my answering machine saying that the IRS had filed a lawsuit against me.  This is a hoax.  The IRS does not call you.  I have no issues with the IRS.  Some sort of scam!

Call leaves automated message from "IRS" about a lawsuit.  IRS doesn't call you.  I too don't have any issues with IRS.  This is a scam.  Don't call back.

When I asked for their federal ID number they quickly disconnected the call and no answer when I continued to call them back.

Supposedly the IRS was going to file a case against me in 48 hours unless I settlef this case.

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

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

Said they were the IRS and filing a lawsuit againist me.