Capitec Incompetence

I have not had a good experience with Capitec. I took out a credit card with them and they confirmed my monthly repayment amount. The day that my debit order was meant to go off, the full credit card value went off my account. I called Capitec to find out what was going on and they confirmed that only the much smaller amounts should go off monthly and not the full amount. I then phoned my bank requesting the transaction to be reversed. I then got messaged from Capitec saying that my credit card was disputed and that I should call Capitec. Upon calling Capitec, they said it was my fault and I should have not disputed the amount and now they can make a repayments plan, which was more than my monthly installments and would affect my credit score. I made a plan to repay the credit card immediately and now want absolutely nothing to do with Capitec. They were very quick to blame me for their own incompetence.