Duplicate transactions - Bank error

Hi

I did 2 online purchases and the money was successfully debited from my account on 10 September 2020. Then the same 2 amounts were debited on 12 September 2020 again. I interacted the PREMIER BANKERS on 13 and 14 September through their secure chat facility as they admitted it was the bank's fault and that the transactions will be reversed but also advised that i need to log it as a dispute. I then logged it as a dispute and one of the bankers advised i phone as well in the morning. I just got off the phone after speaking to 3 different consultants and none could help me. The bankers also advised i need to wait 5 days for the reversal which i am not happy about because what am i supposed to do as these transactions used some of my own money and tapped into my credit facility which now attracts interest. I really cannot wait 5 days for an error caused by the bank and need this resolved today. I just also cannot seem to find someone to assist me that actually knows what to do. I am now fedup.