Repeated account payments rejected and I'm being punished

The online app for paying accounts is a disaster and it is still running. Because of it I am now looking bad because of failed payments, have money lost and trying to track it for return, endless bank phone calls, unhelpful emails and a lot of stress and fear. I tried to pay my account at the end of March and the app kept accepting and rejecting. I spoke to my bank and they said that the payment went through and not to worry. I told them that I was concerned about my credit. Then on the 10th, I got an SMS saying that the payment had defaulted and that I was now in trouble. I told Standard Bank that this would happen but they are *****s. And it was, of course, blamed on me. That day I immediately paid the R1400 and I used the app. This app has to be shut down. the money came from my account but because there is a clear problem with using the online system, my money has not been received. It is now sitting somewhere in digital space and I have to fight now to get it back. This online payment is a **** as it can't seem to process payments without *****ing something up. On top of that, I tried to pay R1200 on the 18th of April and on the 19th I got an email saying that Mr Price Money was paying me R1200. I then contacted someone in the company and they said that the amount had been put into my account. So now I am concerned that the money has been returned to me and that they haven't registered it and now I still owe the whole amount. Between the app and an EFT, I have had to deal with R8000 worth of payments disappearing, reappearing and being returned. In the meantime, I keep getting into more and more trouble because of a broken system. I will be fully blamed for this because that is how big corporations work. I have tried and tried to give them the money that I owe but I will be punished because they are unable to handle it.