Answered question
Does Fizz have their own technicians or use videotron?
Videotron and sometimes contractors working on behalf of Videotron.
Other answers
Fizz sends Videotron technicians for modem installation only.
Fizz is using the Videotron network, so the tech is also from Videotron
If you take a cable from other providers, is always a videotron's tech that will come
@Mike: could you please close this topic by choosing the best answer?
The technician that comes to your house is from SC360 its a company that belongs to Videotron
https://sc360.com/ for more information