Decided to pick up on latest call. Appears to be a call centre, apparently representing a number of clients based on info above. Male caller, calling on behalf of CIBC credit card services (I do have a CIBC card, so this makes sense), wanting to enroll me in balance protection insurance. Was pleasant and accepted my response when I declined.

He claimed to be calling from CIBC offering me some kind of credit card.  This is not really CIBC since this bank do not offer cards to their customer this way.

called and didn't leave message.

This number has been calling my cell phone 1-2 times a day for at least 3 weeks.  How do I make them stop??

You should file a complaint here:https://www.lnnte-dncl.gc.ca/plt-cmp-engAnd register your number there as well if you have not done so already.

No one at the other end , dead silence.