These telemarketers are costing me time and money. Any suggestions as to how to discourage them?

(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.

Received a call December 16 at 11:10am. Strange it came up with the phone number twice.
Didn't answer.

Same thing to me ==> TO MY CELL PHONE.  Automated dialer with recording -- I hung up before it said too much but it started with "due to a national economic crisis..."

I received a call from this number today, a recording as everybody says, Some info about a national debt crisis and if you owe $10,000 or more.I'm in the do not call list and I've received several calls from these people

Just got a call from this number. Something about economic crisis and $10,000 of debt.
Hung up after that.
Where are these people getting our numbers from?!? I never used to get these stupid calls.