They don't deserve even a single Star for rating

I app**** for Vox telecom fibre, the I chose an option to pay for my account on every 15 and i advices that I do not want a debit order, but they still wanted my banking details in order to complete the application, so I filled them in. So now I make my payments in time 14th every month and then they debit my account after the 15th again after I have made my payment,so I reverse the payment, then they send me an email threatening to suspend my account because I have to pay for the reversal I made it's about R45 that reversal fee. But now why should I pay for that debit order reversal when I did not apply for a debit order payment? Now another problem they send me emails every 1st week of the month to say my account will be suspended because I need to make my monthly payment on 31 of each month where as my payments should be going off at the 15th. And now they have suspended my account. I am considering cancel their contract and use metro fibre as Vox Telecom service is nonsense, they don't update their systems and we have to suffer for it