Pathetic Customer Service, PAY BACK MY MONEY!!!!!

Purchased a pair of Addidas sneakers online which was delivered to me around 22 January 2023. The sneakers were too big, and I emailed the email address provided on the website to request a pickup and exchange for a smaller size. Within 24hrs i got a response to my email advising that unfortunately my size is not available in stock. I took it upon myself to call various Tekkie Town branches to establish if they have my size in store, none of the stores I contacted had this sneaker in store. I went back to my last email communication with Tekkie Town and advised them that due to me not being able to get my size I would like to request them to send courier to pick up the sneakers and get a refund as there is no other sneakers that was appealing for me in order for me to do an exchange. Again, they responded promptly and timeously to my email advising there will be a R60 fee involved or i can go to my nearest store for a full refund within my 30day period. For the past 2 weeks I've been too various Tekkie Town branches to get my refund. First went to Vangate mall on 3 various occasions and they advised me on all 3 occasions they do not have sufficient money to do the refund as they had loadshedding on those days and on one occasion I went to them on a Friday, and they said it was Mosque and loadshedding and i quote "you can't blame us if we don't have cash instore". I then decided to call them for a further 3 occasions to ensure they have the funds available as I cannot keep driving there wasting my petrol for nothing. Not only did i find this ridiculous as they did not attempt to find a solution or offer a solution, but they were also unfriendly, unprofessional and unhelpful. What got to me more is the 3 times i was at Vangate mall 3 of the store staff members was standing chatting away in front of the counter and they all looked at me and grind at me for explaining my story. The attitude was we don't have you can't blame us so come again or go try somewhere else. I decided that i am done with Vangate staff horrible customer service and their staff's attitude and my partner went to N1 City, to my suprise he had the same experience, sorry we dont have cash you will have to come back sometime and see if we have cash. He explained to them my experience at Vangate how many attempts i made and that my 30day return period will be over soon. The response, there is nothing we can do our float we get daily is too little and business is slow. After expressing his frustration they said they will call me if and when they have funds available. I always shop sneakers online and never ever did i experience this kind of service or hassle to return or get a refund from the likes of Total Sport, Sportscene etc. Was my first and definetly my last time shopping from Tekkie Town, i will rather remain with providers that gives me good quality service and eager to get my issues resolved timousely . I am extremely disgusted, irritated and annoyed by this. I refuse to go to another store just to hear from staff that they dont get sufficient float for the day to cater for refunds and they cant help if business is slow. What kind of staff say such of their own brand to customers in any case, they need training and to be taught how to deal with customers. If i do not get this matter resolved and have my refund in my account by Friday I am taking this to the Ombudsman as I have all my emails to proof how long I reached out and no assistance was provided. I am done going to your stores and deal with your *********** store.