Incorrect information on call and on the app

I have not been using my dstv subscription for the past 4 months, they have debited on the 22 October and I reversed the payment on the 26 October. They than debited in Nov but I also reversed the payment. So they didn't cancel the insurance coverage now they telling me I owe for insurance. I called in to reconnect my services and when I checked app it showed that I owe R372.89 to reconnect my services. I decided to call in because I wanted to cancel a few things on my account and I spoke to Asanda. I asked him to confirm the amount I will be paying after canceling my extra view he said it will be R298, I than asked him to cancel my PVR function he canceled it than all of a sudden amount to pay was now changed to R548.17. I asked him to explain why the call cut. I called and spoke to Sakhile and he told me about the R548.17 as the system now showed that after I canceled the extra things. I requested to speak to a Manager and he told me that the manager is not available after keeping me on hold for a very long time. I requested a call back from his manager by the name of Kenisile but till now I have nor received a call back. I not happy with the service they providing.