Overpayment/Overdeduction

I purchased online from clothing store using payflex. First payment went through same day 2 July 2025, 2nd the 3rd day but there were no funds in my Capitec account, I made payment from my ABSA account on the 6 August 2025, they deducted again on the 6 August 2025 from Capitec for the 3rd time. The 17th they deducted the 4th time, then the 31 August 2025 , they deducted for the fifth time. I tied to communicate with them and there is no solution. I get responses from different people who do not understand that there is overpayment. I even attached bank statement but still. There is no contact number only email to support that is used by several people who responds and ask for bank statements and do not respond after that.