Erroneous debit reversal - terrible service ever!!!

So I had a student loan with Standard Bank, on the 1st of August I requested a settlement letter after which I settled the balance the next day. I then went to the branch to close the account. Yet on the evening of the 2nd of September my account was debited. I lodged complaints via social media (Twitter & Facebook), one response was to leave my details so I would be contacted - that never happened. Another response was for me to contact the customer care line. Which I had already tried several times with no assistance (I held for over 30 minutes in one instance & did not get put through to speak to a consultant). Eventually a recording stating that it was outside of their regular hours was all I got. In the morning of the 3rd, I visited a branch and was asked to return the next day (the 4th) as the money wasn't reflecting yet. I did that, only to find that the account hadn't been closed hence the debit order. The consultant who'd been assisting me then asked if I'd like her to give me cash or to transfer it into my bank account. She said she'd transfer it to my Standard Bank account since my primary account (which was debited) is with another bank and it would take 2 days so I agreed. However, it's been 2 days and there is still no money in my bank account. When I called the customer care I was transferred to another department - which was supposedly the ones who'd help me. Yet the person I spoke to told me he can't assist because on the system it shows that the money is in my account. I then proceed to tell him that I am on the app & my balance is still negative. He responds with "sorry, please go to the branch they'll help you." At this point I am so frustrated with this pillar to post jive I'm being made to do, really Standard Bank has the worst service I've encountered to date. Not to mention the incompetence exhibited when you're requiring assistance. All this toilsome nonsense just to get my money back. And I don't want any more stupid reference numbers or to be called just send my money back.