UNPRICED ITEM TURNED OUT TO BE EXPENSIVE: WHAT IS WRONG TFG GROUP????

I went to Foschini Church Street Pretoria last week. I wanted to buy 2 jeans,. One of the jeans's price was scratched, I checked a jean that was behind it, it was R450.00, same make. When I pay I alerted the cashier (TSHIDI) that the price is scratched and the jean that was behind it is R450.00. She told me the system says the price is R599.00, and I told her that is not the price I saw at the other jean. She went to the floor and came back with another lady who said the price is R599.00. I took them to where I took the jean only to find out that the jean that had the R450.00 was removed and then the jean with 599.00 was at the front. I believe this two ladies wanted me to look like a fool as if I don't know what I am talking about. I left the 2 jeans and left the store. To the Management of TFG Group, what happened to the saying that a customer pays the price that they see? In actual fact I should have got that jean for free because it did not have a price. I feel let down by Foschini because I am a very top client. My account was never on arrears at all. I still need those jeans with the price that I saw or free since the price was scratched. I will await feedback from TFG Group Customer Service. Client comes First.