The fact that they constantly false advertise in their ads just to get you in the door. On many occasions have been caught trying to sell used stuff as brand new in box. And the fact they dont offer any returns or even exchanges! Even if you buy something, walk out the door, take it home and find out its DOA (Dead on arrival), they will not even swap it out for you even if it was bought 10mins ago. They will tell you to take a hike and go through the manufacturer.
I believe Alberta Law states that they have to present you with a full refund as long as it's in the original condition. You might have to do some research, but I'm quite certain there's something like that...or ask any Law student. It's in one of the first courses that they teach.
These guys get such a bad rep, I dont know why anyone would even set foot in there.