INCORRECT DEBIT ORDER

I am a very unhappy Nedbank client as they duplicate debit orders on my account which has a negative impact towards my record and my other commitments as my Personal account goes to a debit balance because of that. It's been 6 months to a year trying to rectify the same error they do and consultants keep saying they will taking it up however no one is coming back to me if so I will deal with the matter through the Bank Ombudsman for incorrectly debiting my account and no one is willing to answer why other amounts are duplicated. Can this be resolved before I take legal action.<br> Amount Duplicated: R993.47 as well as R 1,638.71