Poor service - unwilling to help customers

Very poor service.

I joined discovery around 2 months ago. Firstly i received very bad service to just get my account going. I even considered going back to my old bank but decided to stick with them as i have had good experiences with other discovery products .i also got an iphone through them shortly after. After my first “goal cycle” i had met 50% of my goals hence i owed 50%. I paid the outstanding amount into my credit card but under “credit facility” the screen didnt update and it still said i haven’t made the payment. As i didnt wanna be in arrears i thought i had to make a payment to my budget account (which wasn’t my intention). So i made a r5k transfer in there thinking that it would be reversible. I even called the call centre on the 6th i think and the agent also didnt know why the screen didnt updated and even suggested that i try paying into the budget account. Today i realised that making the r5k payment resulted in a decreased instalment (hence decreased cash back). However this is not explained anywhere. I called discovery today as my transfer was clearly a mistake and the call centre lady mentioned that they wouldn’t be able to reverse this transaction????! I mean this was clearly a mistake and i just need it reversed., i had no intention to put r5k towards my budget payment just now as it makes no sense for me to reduce my cash back! The lady ensured me that she would escalate the matter but i know from past experience with discovery bank that i will probably never hear from then. Hence here i am! Please assist me in reversing this transaction.As the lady i spoke to mentioned the system isn’t built thinking that people would make mistakes so it can’t be reversed. However I’m sure manual adjustments can be made! But if that’s not the case the Implications of paying into the iphone budget account should be made clear. Kindly escalate accordingly and assist in reversing this transaction.