Woolworths Financial services disappointed me

I am so disappointed on how woolworths handled my account, I have requested settlement quote early June and I received it and pay the money owed according to what the settlement is saying, I then requested account closure letter after sending POP and was told I am still owing and kept receiving calls, WhatsApp to say I need to pay money which I had already paid, then one consultant responded to my email and said the money was paid into the wrong account, then I asked how possible is that because I used the same account on the settlement quote. She then promised that it will be investigated and they will allocate money to my account. Then I asked for settlement after allocating the money, so 2 weeks ago I was told that my account is owing again and I asked them how, and told them if you will charge me interest for the time wasted while allocating money into my account I will not pay, so I asked for account closure letter and still was told to pay, I then paid the money last week, same amount that they said I am owing, and I sent POP, then asked for account closure letter and after 2 days I was told that my account is still short with R55, and this time I was furious because just 2 weeks ago they said I owe R244 and I paid it and now R55 and I asked where is the money coming from, I am really disappointed in how they are handling my account and now I don't know what to do because I have paid what they said I am owing. Woolworths is not the same anymore their service is so disgusting and I am running out of words