Mr Price Westgate not keeping to their promise to call me back to refund me for an extra charge after 2 days of the sale

So, I went to Mr Price clothing at Westgate on Saturday the 2nd July 2022. My purchase was a total of R510.48, the slip didn't print after I swiped my bank card. I was informed that this is a double charge, as the slip didn't print, which means the money didn't get to their bank account and I need to swipe my card again. I was assured that on a Sunday COB they will have called me to repay me for the extra charge and it will be paid immediately. I even questioned the immediate payment since it was on a Sunday and I was re-assured that Sunday the 3rd will be the day they refund me. Today the 4th of July, I called the store, with a number on the website *** and the number doesn't exist. Alternatively, I called the customer centre at ***, 4 consultants later, who all cannot give me the number for the store and insisted that they will connect me to the store, after a total of holding for more than 2 hours through the duration of those calls, I still haven't been refunded my money or gone through to the Westgate store to speak to the manager. These calls have cost me more than the actual amount that they owe me as I was holding on for a long period and also having to call back again and again because they were not answering. One consultant even said they will write an email to the store to let them know to urgently call me, it is almost COB of day 2 and I am inconvenienced with R510.48 still.