This is the number for CBVCollections... they are a ruthless credit debt collections agency... personally from my experience with them, they are extremely unprofessional and very much not a reputable canadian business, and more like Rude Rackateering and ignorant threats. My suggestion, Ignore them, or change your number... and if they get too bad, contact the local police and report them for harassment. They have many other numbers too, one of which is a toll free number ( 877 355 9925 ), among probably many other toll free and regular numbers.
They also have many offices across Canada, but their main operations run out of a tiny office in Montreal, Quebec.
Hope this helps you out Mary. :) I too have been getting harassing phone calls from them claiming that I owe money to Telus, when I have never ever had service with any cell phone company, let alone with Telus. I think they are partially a scam n scheme Kind of company as well, but I have no proof of such... yet. :P

Dee Didders