Unhappy Customer / Rude Manager

I went to buy a running (takkie) shoe at Mall of the South Adidas on Friday the 1st of November 2024. I explained to the sales person that I want a good shoe that is not going to give me blisters. The sales person gladly said if I run with the shoe and it gives me blisters I must bring it back. Sunday morning I had a 21km run and at 10km I started experiencing blisters and I knew then that this was not a good shoe to use. Today I went back to the shop to explain my predicament and they should exchange the shoe for another shoe, I don't mind topping up because I can't have paid for R 2400 only to wear it once and get blisters. The till lady read the return policy and I explained to her that I'm returning the shoe based on what I was promised and maybe the is a factory fault with the shoe and they return to Adidas SA. Indeed the lady took the video and send it to her line, after a few phone calls that she did I asked her for a turn around time to create expectation. I then asked to speak to the lady on the line as the till lady was giving me short answers. When I spoke to the lady on the line, she was immediately rude to me and said I mustn't shout at her, I told her I'm not shouting but aggrieved and frustrated about what I was promised. She then said to me that "she does not care" and won't listen to me. I said to her that's not the way you speak to customers and she said she can speak to me whichever way she wants. I asked for her name, and she told me that her name was Bernice Macback, couldn't get the surname because she so rude. I was not happy with the treatment I received at the shops and thus asking for hello peter to intervene. I even left the shoes in the store, waiting for their feedback as I left my numbers.