Disrespectful store manager, with such an attitude

Pep at home store in Galleria Amanzimtoti. I went to look for scatter cushions and I found one on display with a big promo price. I bought four of them and only when I got to the till I was told that the price displayed is not for it. I asked for clarity and the cashier Mandisa could not answer but a lady who was behind her whom I was told she is the store manager responded with such a bad nasty attitude. She said the price displayed there is for something else of which maybe the customer moved it or bought it. I asked her what then do I do as a customer because the price I see is not the price of the item she continued with an attitude saying prices are on the item on on the display and therefore she is done talking to me. Her attitude really shocked me and as a manager what is she teaching the staff? Is she teaching them that customers are not be respected? I'm never going to set my foot there. It looks like that Zamo Manager person has got no values of customer care. It looks like she thinks pep store is for poor people who do not deserve to be respected and I wonder how many more customers leave that store feeling the way I did today. I'm never setting my foot there again obviously her target market are people who don't reason and therefore could be talked to any how.