Poor, poor services and unfairness

I switched to another service provider for fibre ages ago and no matter what I do with Telkom I cannot cancel my old internet connection. I have not used it for nearly a year but every month they charge me R480 for nothing. When I try to cancel it I just get passes round different departments who always tell me 'wrong department' really, really not fair. I have a fault on my land line that has been going on for ages and for a month they have told me it is foxed when its not.