Shameful behaviour and unprofessionalism and bad systems

I have a Service policy with Liquid Capital and they have been debiting my account with no issues. Then today I take my car in for service and I am being told that my account is in arrears. The service consultant at the dealer was very helpful, and we call Liquidcapital, and the lady I spoke to was also very helpful and she told me that I am in arrears and she transfers me to the collections. Department so that they can assist me. I get to speak to a Sibongile and she tells me the same thing, however to begin with her tone was off but I let it go. She then says to me I have to confirm my details, but she had already told me that "Capitec clients have a tendency of saying they did not debit". So I correct her, don't generalize you have never not found money in my account and how come I never received a text from you or an email nor from my bank? She says I need to take that up with my bank, and I tell her listen I have my statement here and there is no rejected debit order reflecting. She starts to argue that then is my bank's fault. I then proceed to confirm my details and she says that the cellphone number they don't have on record and she needs to change. So I tell her how come I keep changing my details but they just never seem to update them. Then she says that she will send the banking information and I must do the right thing or else she won't assist me. I told her to not speak to me in that manner and that all I am asking is for her to send the details, and she asked would I rather they double debit on Friday? I just could not take speaking to this woman and her disrespectful tone and her not being empathetic to the situation which was not my fault as much as hse says it was not their fault. Sibongile I am not happy and if that is how they teach you to speak to customers then shame on Liquidcapital. It is only now when I left the dealer that they send me a text that my account is in arrears. And yes I told her "wa mphaphela" in retaliation to what she said to me.