Early Debit with no consent

My debit order date is the 25th of every month. In September, you Cell C, took the liberty of debiting on the 22nd with not notification or consent. This has resulted in a returned debit order on my nearly 20 year clean record with Cell C. Yes, I have never missed a payment to you or any other service provider I use. Thanks to you I now have a returned debit order on my bank records as well!!!!! I called the customer service on 25/09 at 14:47 and spoke to Lungile who refused to give me her surname citing she’s not obligated to provide her surname. She told me she can’t log anything about my complaint. I must wait for the penalty charge only then can log my complaint. This on the advice of a team leader,Nstako, who refused to take the call because “the team leaders were going into a meeting”. When I say refused she point blank refused to take the call and told me to wait. Nstako also doesn’t have a surname. I want my debit order to collect again and I want a refund on my bank charges. No penalty fee and this unpaid debit order to be erased from my account.