Total mix-up of account

For 2 months I am assured that my account is up to date. Now suddenly I am bombarded with computer messages that my account is in arrears with R1585. After a few calls to customer service I am told my account is in arrears with R200. So what now? I paid my account every month. Last month I did not get a statement and had to make several calls to get a statement. Now I get this *******. I have complained about bad network service for more than 3 years. No reaction to that. About 2000 people are suffering from this bad network, paying every month. That is ignored and then they spend time wasting my time with their inability to manage accounts. Why don't you just set me free and cancel all my contracts. I am tired of this nonsense that pops up frequently.