Debit order still being processed on settled account.

I am giving a 2 star rating, mainly because on my other transaction I seem to be getting good service.

I traded in my i20 at a dealership for a new car. The dealership settled the value outstanding on my i20 and I got the finance for my new vehicle.

The settlement value reflects on the account when I view it, however, on 01 June 2018 the debit order for my i20 still went off. I have contacted Wesbank multiple times since 04 June 2018 regarding this matter. They keep advising me that the refund has been authorised and paid out and that the funds will reflect in my account by the next day, I have been given these responses since 06 June 2018. Every morning I wake up and there is still no funds reflecting in my account. I called them once again this morning, 11 June 2018, and was told that the funds were released on Friday 08 June 2018. There is still nothing reflecting in my account. This is becoming rather frustrating as I cannot afford to have 2 debit orders for 2 vehicles going off on my account, when one has clearly been settled and I should not be paying for this. I would really like this refund to be processed and my money returned to me as I have need for it. I am also concerned that going forward, further debit orders will be going off on my account with regards to this settled account as clearly there is a problem with their systems. Can somebody please get back to me regarding this.