Unauthorised deduction on my account

I am very frustrated with ABSA. I am behind on some of my personal loans installments where I have an arrangement with 2 of the 3 and is in process of making an arrangement on the last one. AGAIN ABSA went and deducted R4,936.32 from my account without my permission. I see this as theft as I did not approve ANY deduction and 2 of my loans have debit orders set up whilst I am negotiating with Shackleton Credit Management for the last debit order. This is UNACCEPTABLE and I will not stand for this. I will close my ABSA account after I have received the refund which is not negotiable. This has happened before and they keep on doing it unauthorised. I will also contact the Ombudsman as this is *****.