Builders Warehouse Ballito-P0or Service

I was buying Jumper Cables/Booster Cables at Builders Warehouse Ballito,the price of the cables reflected as R180.00 but as i got to the cashier it was R769.00 i asked for the manager as this was not my fault the wrong pricing was displayed. I was disheartened when i did not get the product, i honestly believed Builders Warehouse are reliable and honest, putting us customers first. It was not my fault wrong prices were displayed!!!!