Ya, 100% scam. Got the exact same thing. Message claiming it was the CRA and would be prosecuted if not dealt with. When phoned back, woman had an accent so thick, you could barely understand her. She claimed to be a cop and said, "the reason I am calling you...". Haha...I CALLED HER. Clearly she was reading off a script of some sort.
I got a call from this number. When I answered, I got a random recording threatening legal action. I called it back. They asked if I was home alone. When I said no, they confirmed the address. I said that is NOT my address and then was hung up on.
got this message about car legal action as well. avoid calling the number back. you can refer to CRA website with them describing fraudulent calls. Do not give your personal information out.