I live about 10 minutes from this Canadian Tire and I have to say that it is by far the worst service i've seen at a Canadian Tire in the country. I have been to Canadian Tires in Quebec, Alberta and all over Ontario, Including all of the Mississauga locations and this one takes a cake, so here is my story about the heartland location.
A few years (2007 or 2008) back my parents bought brand new winter tire for their car. Three of which in the first two weeks had to be replaced because they weren't installed properly or maybe a bad batch. When we brought the car back after one of the tires needed replacing the service manager. Was telling other costumers including us how busy they were. He proceed to tell us of another person that had their car in the shop and he was laughing at why it was in the shop there. He told us that it was there because the person's wheel feel off their car going down the highway and he was laughing about it. Since this my family and I have tried to avoid going back to this location, because of this one staff member and manager at that. My parents also filed a complaint against the shop manager.
So in short you might understand why such a sign is up at this location is up, they clearly do not care about costumer service there.