Nedbank not resolving incorrect debit complaint

Nedbank continues to debit my account with increasing debit order amounts, creating a charge of R 110.00 every time with my bank although they have been formally notified by my debt review company in June 2021. The debit order was also cancelled by me in June 2021 with Nedbank call centre ( no mention of a form to be completed by call center agent). Debt Corporation and myself have been attempting to resolve this matter since June 2021 whereby I then registered a formal complaint with Nedbank in October 2021. I forwarded all my bank statements as proof to show the debit orders and the banking fees incurred due to every debit order going through after the debt review process was formally launched in June 2021.. But Nedbank decided to close the complaint prematurely citing the relevant information was not received. HOW????? 5 months debit orders were provided showing the debit orders and cost incurred. As far as my knowledge serves, the NCR and debt review process is regulated. I have always received the most professional service from Nedbank. This however is not assisting a professional image. Assistance resolving this issue and receiving back all bank costs incurred for every debit order that was deducted since June 2021 will be appreciated.