Bad service

I bought airforce code ***2 at mall of africa the size 8 but was given size 9 when I returned it they said it's a size 8. Anyway it wasn't the right size and I didn't wanna argue asked of they could change it but it was a last pair I understood why they insisted on saying it's a size 8 and they searched on other branches for size the found it at rose bank, the guy and the manager said ill get the next day but i said its ok ill give allowance and get it Monday. When i went back the shoe wasn't there they all said as a choir these an error on drivers after i gave them 3days they will bring it. Today its the 23.10.2019 and I don't want to go through your policy nonsense please after I gave them so much time can i be refunded, you have my money i don't have the shoe and nolonger want it i had to go buy another because of bad service