Paid up account was a handed over

If I had an option to rate them a minus I would do that in a heartbeat , I paid my cancellation fee to these people in may. I do not owe them and when I call their call center they do agree that I do not owe them . But to my surprise they have handed me over to their lawyer. I feel so defeated I do not know where to go or what to do. My credit profile is a mess because of them. DO NOT WASTE YOUR MONEY WITH THESE CROOCKS, I have been speaking to the lady by the name of bulelwa she told me not to worry she will resolve the matter 6 months later nothing has been done . I call them every week to try to resolve this matter but they always promise me to call me back . Am the one who will call them using my own money. Am defeated I do not know where to go