Worst customer expirience

Went for some grocery shopping at picknpay Dobsonville. One of the things i purchased was peanut butter smmoth that was priced R15.99. When i get to the till its priced R23.79. As a customer i wanted to pay the price i saw on the display. Then i tell the cashier Lizalise that the pricing is wrong and i am not responsible for packing their groceries. He bluntly ignores me and calls another customer and pushes my bag to the side. Stood the 7 minutes then he calls one of the supervisor Hlengiwe and she was no help at all. She actual y blames me for not checking the IP number that I am not even fami**** with. Then i decided to take my money and live the peanut butter there. These people need people development skills and be taught what is customer service and experience.