Repeated hassling - Nudebt/Telkom - useless people

I cancelled my Telkom line in August 2017 after my ADSL line was dead for 30+ days. Nothing was done about it and I have sent through my proof of cancellations numerous times to Telom and Nudebt. Now I am getting hassled for an outstanding amount of R1400+ and my monthly was only around R200. There seems to be a general lack of s****s/knowledge and or will to get this sorted out!!!!!