I GOT BILLED FOR SERVICES NEVER RECEIVED

I subscribed to Telkom for the ADSL Service. I have always enjoyed the service until early June 2015 when the ADSL service was not working. As result we stopped paying for the service. I however still got billed for the service which I never used<br> <br> I went to an outlet in Centurion to lodge a complaint and I was given a reference number. I asked whether maybe I should cancel or suspend my service in the meanwhile since I noticed I still received bills and the bill kept accumulating each month while my query was taking ages to be resolved, I was advised that I will not be billed as the issue was under investigation. To my surprise the bill still kept accumulating I then went back to the center and asked that the ADSL be cancelled total as I noticed the bill accumulating while my issue was not been sorted. I tried to call the customer care as well to follow up on several occasions and I was advised that I would get an SMS once the issue was sorted. <br> <br> I never got any sms to notify me that the issue is resolved all I got were reminders to make payments and warnings from debt collectors that I would be blacklisted. My ADSL has been off from June 2015 till today!!