Shoes returned to Tekkie Town but No Refund Paid into my account?

I bought a pair of Tekkies for my Daughter in December 2025. They were the incorrect Size. I returned them the next day and received a credit Note. I gave them my credit card details (new details as i didn't have the one with me that I had purchased the Tekkies with). The attendant Kristen said that it would possibly take about a week to process. I went back some weeks later as I had not received anything. They said that I would need to give them a Bank Statement to show that nothing had been deposited?? Surely it was their duty to prove to me that the refund had been processed. I assured them that i had not received the money and that I would need to take it further. It was Saturday morning over the Christmas period and the queues for the bank were crazy. I asked if they needed my slip and she said - no, that it would be in their system, so easy to find. Since then i have cleared out my bag of slips but luckily i took a photo of the credit slip that they printed out at the time. Anyway. I went onto their Website and wrote a complaint asking for my money back - with no response either. So Tekkie Town has my R849 AND the shoes i returned! I bought the correct takkies and another pair that same week at the Blue Route Branch so i ended up paying for 3 pair of tekkies that week but only have 2 pairs to show for it!! I love the range that they have at Tekkie Town and generally I like shopping there but I would like to be treated well as a customer and receive my refund!