right here on this website is a place to look. Since you have missed it, here is a link https://www.ideafit.com/activity/kickboxing/on/ingersoll?country=ca&locat…
Fitness connect is always the best place to start looking for instructors and other type of trainers. The link Karin has provided you with should be good enough to begin your search. Beyond that, look for places that provide such classes and a quick online search should help you locate a few close to your area.