Complain about deduction without my consent

This company is been deducting in my bank account without my consent. I am a B3 client and they ended up their contract with them last year September 2025. Since last year September I have been trying to stop the deduction from their side and they keep on deducting. Only today 31.March I managed to get hold of them. They told me some clients decided to stay with them. I want proof that I gave them consent to deduct from my account. I know nothing of their policy not evenly one comms received from them or explanation about this policy except payment deducted. I told them to stop deducting from my account, according to their consultant I shld give a month notice. How can I give a notice on the company I have never signed up with or give consent to deduct from my account. What policy was I paying for and who gave them permission to deduct from my account. That consultant have no answer she is only programmed to tell clients that some of the clients wanted to remain with Clientel. I request for the document as a proof that I have gave them consent that I signed up with them or if they called me a recording. All the money deducted I want it be returned back to me or paid directly to B3. I don't have their policy number or any knowledge about this policy. I am paying B3 amd they are also deducting. Today (31.03.2026) requested for the report of what is deducted from my account. This is ***** and the bank do not have any control to stop this deduction bcs they keep on raising payment. It means that my information is not protected and the POPIAct wasn't followed.