Charged for a cancelled order I never took

I ordered food from the app at Hungry Lion. I used the vouche, hoping that I would pay the remaining balance by cash. The order went through as well the voucher. The delivery guy then came and said I must pay R80 but I said I used a voucher but he said the order was R80. I checked on the app and the voucher was not accepted, even though when I made the order initially, it accepted it. I then had a charge placed on my account which I have to pay for my next order, even though the food was returned, which makes absolutely no sense why I have to pay for the whole order when it was returned back!

I made a note of this to Ubereats support. They said everything will be fixed and that the charges will be removed and that I can order next time l. The charges were indeed removed but everytime I try to make a new order, I keep getting declined due to insufficient funds, even though there is enough funds in my bank account and I successfully app**** the voucher.

I really regret using this app as it is the worst delivery app I've ever encountered! I stopped using the Uber app as well as I found the drivers to have a bad attitude and some of them unfriendly!