They called my home phone  and did not leave a message, when I reversed dialed it said it was cra.  I have no dealings with them.

my mom got a call from some idiot claiming to be from rev Canada and that my mother would have all her assets frozen and she would be arrested today unless she paid $1000 right away within 1.5 hours or the cops would issue an arrest warrant for a woman that is a pensioner and isn't aware of how evil this world can be and the type of predators that use these tactics.  Her blood pressure was through the roof and she had a nervous breakdown... these guys need to be stopped!

The said they were CRA and they were taking legal action on the message they left.
When you call the number to return the call I only get fast busy signal.

CRA scam message.

Left a voice message. Voice synthesized, no doubt to hide the very thick accent of the caller. Claimed to be "Jenny Parker" from the Canada Revenue Agency, looking for an immediate payment of back taxes to avoid arrest. Clue 1: CRA would mail you legal claim documents for any case of back taxes owed. Clue 2: Automated-Dialing-and-Announcing machines are illegal in Canada.