Unauthorized Debit orders.

I called truworths and arranged to be drbited a double amount and it did not happen. When I called and asked why I was told that I had authorized the debit order on a different date wich was incorrect. I then sent an email and was told that it was a system error. I few days later a call center agent from. collections called and told. me that I owe. When I asked why he said my debit order was unpain. I demanded to speam to a supervisor who was just as stupid. She said the same thing wich was incorrect because the debit was never submitted to begin with. I then told them. to debit me as soon as possible and they said they will do so on the 19th of August and again on the 31st. I also received an email to confirm this. The debit on the 19th was submitted successfully but the one in the 31st wa not. I called again and the rude lady said I authorized a debit for the 19th of September not the 31st. I told he multiple times that I did not but she would not believe me. I sent an email to get an explanation as to why you people are messing with my credit record and I was told its a mistake. I thought everything was sorted but I still got debited. My bank paid it from my overdraft. now I have to. pay interest plus for the unauthorized debit. You have stupid call center agents who mess up people's credit records and who submit unauthorized debits. I also going to send this to the Ombudsman.