I received a recorded message, a female voice, which began the moment I picked up the receiver, telling me I was under criminal investigation by Revenue Canada for tax evasion; this call came at 8:19 AM on July 22, 2016.  Hardly a professional call, and certainly a scam I would say.  I owe Revenue Canada absolutely nothing!

Received a call a few minutes ago from this number.  I didn't answer it but assumed it was either the MICROSOFT  scam or the REVENUE CANADA scam.  Apparently, it was CRA.

Received a call a few minutes ago from this number again.  I didn't answer it but assumed it was either the MICROSOFT  scam or the REVENUE CANADA scam.  Apparently, it was CRA as this time they did leave a message.  It was a female voice, no accent.

Received a recorded message from this number saying that there are criminal charges associated with taxes and to call them back.  This is a scam - call the police and report it if you are called.