Received call this evening in BC

I recieved a call from this number; can't call it back; no message was left

Just got a call in Mississauga ON.  I never pick up on these calls and rarely are any messages left.  Scammers.

Received a call today London, Ontario
no message left!
They have to be stopped!

Made the mistake of answering this robocall that begins, "Thank you for registering your number for a free vacation...."

Hung up, but I suspect that was too late and I'll now be continually pestered. Don't answer if you see this number!