Credit Record impacted because of SB's incompetence

I have recently taken out a loan with standard bank and a month in I am already having problems. I made a cash payment over and above the minimum payment, yet on their side it reflects as a non-payment as it did not come from a debit order -how ridiculous?

I called the loans team which informed me that they cannot help as there is an issue with the debit order. Despite the fact that I have paid over and above the amount, irrespective of the debit order, which is SB's fault, not mine as they have not ENABLED the debit order on their side, apparently, yet I am paying for their incompetence in the form of a mark on my credit record now and airtime calling their departments who cannot help me at this time as "the system telling me errors"

Can someone from SB please fix your mixup, as there is nothing I can do my side.