Nedbank service is appalling

My Nedbank has got many Ghost debits orders that I did not authorised. Every month I keep on reversing debit orders at my expense. It looks like my bank has inviting everyone who wants to debit my account , and so, they benefit on the charges. New debits orders are added to my account from month to month and even if you stop one company the new will be added. So the question is why do I paid for Admin fee EVEN if I admin by MYself. Nedbank service is appalling