Capitec Bank credit card payment

I am so frustrated and angry with Capitec Bank. My credit card debit order didn't go off from my Standard Bank account as I get my salary on my Standard Bank account. I received an sms that they didn't receive money for my credit card, I then called Capitec in order to find out what happened cause there were funds in my Standard Bank account at the time that they were supposed to debit my account. The guy I spoke to when I called told me they can't do another debit order for a credit account therefore I would have to transfer or do a deposit. I then went to the bank to do a direct deposit. To my surprise on 11 June 2020 Capitec Bank debited my account after I had deposited the money at the bank. I then called them again as now the debit order bounced as I don't have enough money in my standard bank account now. I was told that they don't know what happened and the guy said he would transfer me to the collections department as they are the one's who give out the order to collect the funds. I don't understand why this debit order went off because I paid the money. Who is supposed to pay the amount of a bounced debit order.