This number is Bell Mobility Technical assistance, based out of Montreal.
(Also referred to as TAC)
I had opened a trouble ticket with Bell Mobility to advise of an broadband internet outage, and this was
the number that called me back.

This guy called my old workplace from where I had been laid off more than 2 months prior and left a voicemail saying that he wanted to offer me a plan to leave Telus and go back to Bell Mobility.

1) I never had any phone service with Telus.
2) I've never had a cell phone with Bell.
3) The cell phone that I had while I was with the company was from Rogers and was being paid for by my former employer.

I think these guys are just cold calling hoping that someone will talk to them so that they can get their "spiel" on!

http://www.411.ca/business/Bell-Canada/6377462.html

For about 3 months, I have been receiving calls almost everyday from (514) 420-7700.There is a guy asking to talk with Mr. x, y, or Mr. z.His voice seems to come from a distance or the caller may beusing a speaker phone.The caller never identifies himself by name or as talking onbehalf of Bell Mobility.This guy might use a gadget to trick the Bell Last CallerService *69 into returning the 514-420-7700 as the number of thelast caller.The Bell Canada company should check into this right now.

For about 3 months, I have been receiving calls almost every
day from (514) 420-7700.
There is a guy asking to talk with Mr. x, y, or Mr. z.
His voice seems to come from a distance or the caller may be
using a speaker phone.
The caller never identifies himself by name or as talking on
behalf of Bell Mobility.
This guy might use a gadget to trick the Bell Last Caller
Service *69 into returning the 514-420-7700 as the number of the
last caller.
The Bell Canada company should check into this right now.

This is from Bell Mobility. Supervisor line.