Noting this because when I used Canada411 to look it up, it said it was a construction company in Mississauga, but that just seemed unlikely so I checked here. Not a robo call, a live person. However, the comment here that it is the mayoral campaign is correct - I checked by calling the number.
Normally I get no results on those other sites like Canada411, so I was amazed to get a result this time. Guess what? Wrong result. Definitely sticking with 800notes in future.