Poor Service Making Customers Leave

In January 2016 I contacted the call center to downgrade my services to EASY VIEW since I was on vacation. In early February I realized that services were not downgraded and contacted the call center who advised that I needed to pay R161 + R39 (A total of R200) to be fully settled with my account. I made the payment and was then contactedin early March by a call centre agent for an arrears amount of approximately R429 . I told the call center agent that I am not liable for the charges since I made contacted them numerous times to ask for the downgrade of services. The agent then advised that the charges will be reversed but this never happend. My services have been permanently disconnected since March (yes , I did not even get the easy view). I called yesterday to activate the services yesterday but was told that i have to pay my outstanding bill first (a charge that was meant to be reversed). Can someone please investigate this matter. The poor app, ridiculous website and now call center makes it very difficult to remain a customer.