Pick N pay wrong price policy

I went two weeks ago to buy groceries from my regular P&amp;P shop. At the tills I noticed that the price of one of the items was much higher that the price that was on the shelf. Upon calling the manager, he went to see and said that he could not give me the item as per the price tag, as \the bar codes were different\" . He totally refused. . It was a product's price and the staff had put a product from another company under it (viennas). I called the customer care centre and they said it was the company policy that if the bar codes are not similar they do not give the customer the lower price. I found that quite unusual as I had some similar incidents with Checkers/Shoprite and Spar and they IMMEDIATELY WITHOUT A WORD gave me the items for the price on the price tag! I tried twice to talk to the EC Customer Service Manager to clarify this, each time he was not at the office, so I left my name and number, but he never contacted me.<br> Why must the customer pay for the mistakes of their staff? how many people paid more because the staff members have put the wrong price?an then they refuse to give it at the indicated price???BAD CUSTOMER CARE POLICY!!!"