Empty promises and not willing to assist

I bought my daughter Adidas at Footgear Sontonga Mall, I bought the shoes in December and was assisted by casualty staff. My daughter complained about the sneakers not fitting, only to find out they gave different sizes (11 and 13 in one box). I contacted Footgear customer care line for advise and was advised to take them to the store with the shoes box and request the correct size.

I went to the same store in i bought (Footgear Sontonga Mall) on the 26/01/2020 there was a lady with a mic outside the store and explained my story to her, she called the manager to assist me. I explained the story to her, she then went to look for the pairs but did not find in the store, who came and told me there is no pairs which is possible that when i bought the shoes it was still Edgars and I advised that when I bought the shoes it was already changed to footgear and I used my card to purchase. She then requested proof of payment advising that she can't assist unless I have proof that i purchase them at their store, I then advise that I swiped my card and if it is possible to bring bank statement as proof of payment as I don't have receipt.. She agreed saying since the shoe pairs (11 and 13) spare one are not in store, when I bring the statement they will change them.

On the 02/02/2020 I went back to the store with my bank statement and the shoes in the box that I got them with. I found a gentlement outside, I advised the reason of my visit.. He then called the lady I found the other day with mic while I was waiting for, he came with size 11 from the store and I advised him that I needed size 13.. The lady took the bank statement advise she's coming as they're looking size 13 (Mind you on the 26/01/2020 I was advised the pairs of the shoes I have they dont have in store).. I waited about 20 minutes with no one saying anything to me.

She later came back to advise me that they can't find pairs (Mind you they told me last week already that the shoes are not there but still told me to wait while they look for it) and when I bought the shoes they were using Edcon system and to assist me they need purchase number that is found in their till slip since I dont have slip the manager is not sure with the process (Meaning the manager was not willing to assist because she could have done her research during the week as she knew I was coming weekend) .. She will call customer care for advise as they are not working on weekend.

As I speak I have a box with 2 different sizes and proof of payment, what upset me is the manager never took a second to come talk to me, she was sitting in the office telling me she's looking for the shoes that they knew they don't have in store and wasted my time and money as I use transport to get to the store.