Incorrectly charged

Went to purchase a few items worth R387.84 and as I am at the till paying by card,the cashier advised me my card declined due to the network terminals for their card machines,so I had to withdraw cash at the instore atm at Isipingo boxer store and paid cash,when I checked my app while I was in store it showed the money was deducted from my account and the cashier advised it will reverse back within 10 minutes since it was the network that was down. Monet didnt reverse back and now I went again on the 7 october with my bank statement to boxer store to enquire about the transaction for card purchase that charged me and didnt reverse back,yesterday a admin lady calls me to tell me the money didnt charge on their account,so I must call CAPITEC,when I call CAPITEC they have advised that the charge was processed,boxer should refund me,and I am so angry with the going back and forth for my money,I use my transport to go back and forth to sort this out. I am so angry and frustrated that they are not resolving my issue and playing the blame game. All proof shows boxer did charge me,why aren't they paying me back my money,