Stock and Forex Academy are making unauthorized debits from a client.

I would like to review stocks and forex academy. I was employed by them and then became a client. Overall their service is not the worst. Their product which are educational videos are very good however my concern comes in after payments have been made. I had signed a contract which allowed them to debit me until August 2022. It appeared that the debit was canceled on the correct expirry date. However the debit began running again as of October 2022 until December. I contacted my bank, who informed me that the academy is responsible for canceling the debit and the CEO himself confirmed they had done so there must be an error. He had advised me that he would attend to my refund of the three debit orders which where run without my authorisation or acknowledgement. It has since been 4 working days and the weekend and Mr. Potgieter is insisting my refund must go through the bank system and is now saying I need to cancel the debit order on my side. He has not given me any confirmation as to when the debits will be reversed and I am now hanging in the air. This has left me wondering if any other clients are experiencing similar issues.As I have banking experience myself I am very sure a debit order reversal should take a maximum of 48 hours and furthermore I am not going from department to department but talking directly to the CEO, Mr. Potgieter,I am also left wondering what other channels may I take to ensure that my money, which is rightfully mine and much needed will be returned.