Clicks Polokwane Checkers Center

I had bad service from Clicks Polokwane, Checkers Center. I went in to buy chocolates and the chocolates that I then bought ( or tried to) that was on special. After the cashier scanned everything and i asked him if this is not on special he then called the manager. The manager came to me and looked at the chocolates and told me they cant sell it to as the chocolates had already expired and walked away. She never even advised that she will go and check if there is any other stock. she just walked off. I then checked my slip in regards with the prices and then saw that the cashier also didn't scan my Clicks card and i then lost the points of the thing i wanted to buy.