Impromptu visit by videotron agents at home

I received a door-to-door visit from a vendor/subcontractor (sous-traitant) earlier this evening. The offer is too good to be true!! I'm very skeptical and am going to call Videotron's customer service tomorrow. I'm wondering if the vendor is actually selling Fizz's Internet claiming it's Helix. He had a document that appeared to be a list of Videotron customers in my area.