This number keeps harassing me! I think it's an automated message. I usually just hang up, but I really can't stand getting calls from this number any more.

https://www.lnnte-dncl.gc.ca/plt-cmp-engJust fill Complain About a Telemarketing Call.

(416) 628-5255 is a marketing list likely from Questrade.
They are probably selling the phone number of their customers and contacts without any consent.

Called most of the numbers in my office. Illegal as a predictive phone call not a list. They are not supposed to use just a random/predictive call system.  They are supposed to use leads lists and go against DNS scrubs. I have had work with things like Meridian dialers...not present job...this is just cheap company using dialer and counting on not being reported or t'coms not punishing them. Waste of all of your time...and mine.

When you call back it says something like it cannot connect with the server.

It's a telemarketer. - if you wait and press #2 you'll be taken off their call list. At least, that's what they say.