I need my funds back this has caused more harm

Have recently interacted with this company regarding my debit order that they run without my consent on the account, I have never been so confused like this having to speak to the manager by the name of Itumeleng Molefe and the rudeness and lack of respect and listening skill the lady is, she talks over me and doesn’t give me time to speak, I’m in so much disbelief that my trust in this company has been compromised and broken. They have failed on their side to take the funds we agreed upon the contract after failing that I have to take the backlog of having to end up with so many debit orders and credit score being affected, they told me that it’s their fault for not debiting the correct amount however I still get punished for their actions,I have viewed the month in question and to my finding that I have made two payments which is the one they took and the one that I have made and still on their side they were unable to pick that up.Very frustrating and I really need my money back The supervisor even had a gut to tell me that my car was not covered because of the account that wasn’t up to date and mind you they are the once that made a mistake so I have made two payments in one month however their account department still not able to pick that up,