Disgusting Behaviour from 'Superior' Staff!

Yesterday myself and my husband went to Checkers Hyper in Eastgate to collect the remaining cans of dog food we purchased last week due to not stock along with a few more items. One of the items being a pair of purple bedroom slippers, the cashier rung up the sales and I told her that the slippers are not R199.00 they are R90.00, she called her manager to override the price, the lady went with my husband to check the price and clearly saw R90.00, she then called her superior 'Master' who came and said those slippers are R199.00 and that's how they pack there shelves. He said the left half from the bottom yo half of the top is R199.00 anc the other haf of the top is R90.00 and the bottom right was R139.00, i then said to him if you look and the tabble next to him there are 4 price labels , 2 in the centre with the same price and left and right has its own prices, how csn he explain that? He could not answer me! I said to him I am a customer I don't care or know how you pack your shelves the price clearly shows R90.00 and the 2 tables lower on either side has its own prices. I can understand if there was only 1 pair of those slippers there because that will mean a customer might have just put it there but all of there stock was packed on that top table! He still argued with us after I said do not worry I will put this up on Hello Peter and get hold of your head offices, his response was "ya wena voetsek, you can do what you want to", there were 2 other white managers standing and having a jolly chat, I went to them and asked them to speak to someone higher in charge and they said 'Master ' is the higher in charge. How can someone get a job with that attitude towards customers? I am a business owner as well and yes I do agree with the concept about 'the customer is always right' because if a customer is wrong they are wrong although in this matter I am not wrong, managers should at least have some respect, and if you see your colleague behaving out of place, rectify the matter or calm the situation down, doesn't matter if your position is lower! I will be laying a charge against Checkers Hyper Eastgate for public humiliation and defemation of character from your staff who you hired to insult customers, I will not let this happen to another customer.