Frustrating Billing issues

I’m very irritated and frustrated. I keep getting messages that I owe R719 on my account which is not true. I emailed my payment dates which is very funny because I use my registered cell phone number when paying this account every month. I’ve been calling the call centre which is in India and they keep saying they have escalated to billing department and they will get hold of me. I received an email from the billing department and I rep**** with my payment dates and asked them to check properly because I don’t owe anything. I received another email which says my ticket is closed but no one rep**** to my query. I tried to search for their complaints department and ended up sending my query to another company called rain.. this is very frustrating because I don’t know what else to do to get this resolved. I sent a private message to their page on Facebook, they rep**** asking for my details and very came back to me. I don’t want my services to be suspended because of your incompetence. I have paid till the last day of November and I expect to be connected till the 30th of November then you can cancel your services and collect your Wi-Fi.