So disappointed with Nedbank MFC

I am so angry at the way MFC handled a situation they created in the first place! I made a payment arrangement with MFC to deduct R6500 instead they went and deducted R650 000, its understandable that it was typo from their end. I called them to make them aware of this and they gave the famous "we apologize for the inconvenience nonsense" I then informed them that I am currently busy with a credit application and this R650k is reflecting on my statement can they then give me a letter that explains it was an error from their end so I can send to the creditor. I got sent from pillar to post, they kept me on hold for over an hour, eventually one of the call center agent advised I will get the letter by COD which was yesterday (03 Aug 2021) and they never sent, next day I call to inform them I have not received the letter still and again I'm being put on hold for over 30mins to speak to a Manager called Mokoni.

There's a lot that is dependent on me getting the credit application that I'm busy with and Nedbank MFC is just not bothered. On top of all that they have not reversed the money they debited.I have to borrow cash from colleagues to put petrol in my car.

I'm so disappointed at they way they handling this thing especially since its their fault!