Annoyed Client!

I have a personal loan with Nedbank which has been handed over to attorneys T.J. Maodi Inc. The account was handed over in the month of February 2019. From February 2019 I had paid via eft an amount of R400.00 as per agreement with the attorney. I did the same for the Month of March 2019. However in April 2019 Nedbank debited my account twice with an amount of R2957. I had informed both the attorneys and Nedbank of what had happened. Nedbank advised that the account was handed over to T.J Maodi and that I should speak to them. When i called the attorneys they had advised me that the only way to resolve the matter was for me to have my account debited by T.J. Maodi, which I had agreed to and filled in the necessary paperwork. However in the month of May 2019, Nedbank once again debited my account twice with an amount R2900 and T.J Maodi also debited my account with an amount of R400.00. I called the attorneys and the response I received was that Nedbank probably didn't receive the email instruction not to debit my account.

Going forward trying the resolve the situation the attorneys accused me of lying about my account being debited by Nedbank for the month of April and May and I have been asked to provide bank statements to prove this.... Is this How the client gets treated? I would gladly provide my statements however I want to know what had happened to the recorded conversations which had taken place between myself and the attorneys which proves I had called in to inform them about Nedbank debiting my account???

Can someone from Nedbank please shed light on the situation.... Please use credible and ethical attorneys