No service but I had to pay

I am really getting beyond frustrated of having to say the same things over and over again. As stated in my previous complaints, when we lost our bakkie, I notified Matrix and requested that they cancel the contract. I was informed that I had to pay a cancellation fee. I asked if I could pay off the cancellation amount. No response. In the meantime, Matrix continued to deduct from my account. Give or take a month passed when I contacted Matrix again. I wanted to know if I could transfer the contract to the other car and what the cost of installation was, if I could pay it off. No response. Because I was awaiting Matrix to respond to my requests, I stopped all debit orders as I was waiting for Matrix to respond to my request. Only after writing a review on Hellopeter, did I receive communication from Matrix. The contract for the bakkie was stopped, a unit installed in the other car etc. Now, Matrix is hounding me and threatening me for a R 100. They wanted me to keep on paying for something I didn't have while not responding to requests etc. I don't even mind paying, as is evident in the fact that I'm the one who tried to make arrangements to pay off some kind of cancellation fee, no response, request to move the contract to a different car etc, no response. I wouldn't even mind paying if I had any type of correspondence from collections / accounts departments. What makes me angry is that I had to keep on paying but no assistance from them and the fact that I had to go to the extremes like going onto Hellopeter to get any type of assistance. I will not reinstate any debit orders because of this. My payments for my new contract will be made via eft. My salary date is the last day of the month. Please send me an invoice for my new contract, due date and banking details so that I can load it.