OK humiliates clients who date to speak up against false advertising.

I wish I could give a rating less that 1 star. I was poor through a humiliating experience at OK Joostenbergvlakte. On Saterday 6/10 I went to the OK to buy lunch. I went to the food counter and saw a tray with russians on it. On the tray was a price that indicated R9.99 per 100g. I asked for 2 long Russians and after I was given my food I saw that the lady had over charged me. I informed her of her mistake and asked that she change the price to the advertised price. She refused and I then asked to speak with the manager. She called a man by the name Teacher and he told me that he, the cheff is the most senior employee at the store. I informed him of the situation and asked that the honor the price that they advertise the Russian at. He also refused and then put me through the humiliation of giving my food back in front of a long line of clients standing next to me. This it seems is OK's way of putting clients in there place. If you dare to speak up against there false advertising the will humiliate you. Thanks OK for violating my rights as a consumer.