Unauthorized debit order!!!

Honestly HATE that i signed up with them and I cannot wait till my contract ends. They sent me a message to debit me earlier and advised I must message them if I want it debited normal date. I messaged them NOT to debit me earlier and to debit normal date as per contract. They even confirmed over whatsapp that they will NOT debit me earlier. Low and behold they tried to debit me. There were no funds in my account. My account went into arrears and my bank charges me over R100 for a failed debit order.

I called cartrack they point blank told me they wont take responsibility or pay me back my bank charges. They do not care about their clients. Now im getting emails stating I have breached contract which I certainly have not as my debit order was only supposed to go off on the 30th!! I really hate this company