You definitely got robbed. All gaming companies do this scummy crap. Ever since walking in to GameStop, turning in 10 video games and getting $10 back lol.
Or even seeing how difficult it is finding the unsub button. Or when you resub they have you automatically have the most expensive one year sub pre selected first lmao. It’s predatory I tell you. That’s why I believe you when you say you were robbed. I’m sure the Canadian warning is in 4 point font on some random part of the screen surrounded by thousands of text because the Battle.net website sucks so much