Terrible experience at Nedbank

Nedbank debited me twice on my personal loan account. I called them on Monday for reversal of one (R6195). I told them that other debit orders will if they do not reverse in time. They said the money will be in after three working days. After three working days, money was not in and I had to call and check the status of the case, they told me that they have been trying to call me and I was not answering but when I ask on which numbers were they calling me, they provided me with two sets of wrong numbers but funny enough is that when they message me or do the authentication process they use the correct numbers. They then apologized and promised me that the money will be paid on Friday night and it should reflect in my account on Saturday morning. I bought their story as it was convincing but today when I woke up, the money was not there. I called again today and they said there was an error with the system, but I should not worry much as the money will be paid before 12pm today. I made a mistake and trusted them again, I took the gut to check my account around 2pm and boom the money was not there and apparently they wont be able to help on weekend, they requested I call again on Monday. I am not happy with the service. Nedbank is very terrible, they ads they show on TV, opposite is true in reality. I so miss FNB, they were professional