Checkers bulk purchasing no saving!!

Checkers, I went ti your Moreleta branch. I usually buy the bulk coke that is in a pack of four. There is a slight price difference that is why I buy the pack of four, for the saving. Today there were a pack of six coke lights, packed in a row. I have a foto. I expected a benefit to me as it is bulk. Got to the cashier and she starts ringing them up as individuals. I say to her if I wanted them separately charge I would have taken individuals. I expect a bulk price. Called the manager and only received an apology. Checkers this is not the perception you have created with your customers. Bulk buying is saving that is what we expect. Not a happy customer. I could just as well done my bulk purchasing elsewhere then to get the savings.