Unauthorized debit

I have been debited R89.00 by a company called Hosting In S.A PTY LTD. Even though I reversed the money I was charged R5.00. I don’t understand why Nedbank charges for reversing ********** transactions and I don’t understand how ********** have access to my hard earned money because when I joined Nedbank two years ago I assured that no one would have access to my money without my authorization. Just image the amount of money you collect from these reversals. It looks like you are also part of these ****s.