Canadian Tire is a franchise organization. I would suggest a letter to HO, the Franchise Director (or similar), and the owner of the store you were at (and cc's to each).
Will it get you any further? Likely, no. But, ulitmately, no one can potentially 'fix' what is not known to be broken - and in this case, at least you've documented it.
PS, send the letter AFTER you get the car repaired, and a shop of YOUR CHOICE.