This situation happens a few times to me, .I bought a trailer locking pin for my trailer, it said $5.99 .So at the cash I get charged $6.99, I went back to take a second look to make sure before I went to the front desk. I told the person at the front desk and said no problem.She said no problem and returned my money.I told her I need to buy that and she said $6.99.But to make this short the complaint line you will get no where.I said I will complain to the BBB an the person laughed saying the BBB won't consider that a complaint. Anyways this does happen a lot at Canadian Tire, Miss leading advertising