Rude Store Manager at PnP Clothing Sable Square

Had the most horrible customer experience at PNP Clothing Store at Sable Square in Milnerton. The store manager kept trying to convince me/ argue with me that different sizes will have different prices and that I cant expect to pay the same price for a medium that I would pay for a size small, which was at a lower price. This is a clearance store. The item I was looking at there were quite a few of them in different sizes and colours scattered all over the store, Some of them had the markdown price on them and some of them were not tagged with the markdown price as she kept saying that they dont do the sale stickers anymore. She kept insisting that the medium was R130 and the small was R78 and that different sizes would have different prices. When I did not agree with her she turned her back on me and walked away without saying a word. I then went to the front desk where she then said she had to attend to a customer, which she didnt bother to inform me, just walked away. Then proceeded to call me rude when I pointed out her rudeness in just walking away from the conversation. I expect a verbal apology from this very rude store manager.