Telkom causing personal distress

I've had my fair share of Telkom problems during my lifetime, and they ALWAYS seem to amaze me even more. When I thought I have seen everything, they just raise the bar even higher of how useless they are. I'm basically blacklisted as of now, because of Telkom's negligence. I'm planning on taking this to Court because I will not stand for it anymore, I am fed up with them. Last year February I app**** for a ADSL Line, 20Mb VDSL and I enjoyed the first month or so. After each month, my line quality declined, I logged calls, Technicians came out and after each and every callout, my line was still not fixed. By this time I was paying R1200 per month for a 10Mb line, instead of a 20Mb line. After the 2nd Technician came out, I had a line speed of around 4Mb, and shortly after it went dead. After my line was completely dead, Telkom notified me that I was too far from the Exchange and they will not assist with Copper anymore, after months of service, how can they just keep information like that in the dark until I start experiencing problems? Telkom promised me that I would be credited for the months that I was having problems, but I did not get any discount or credit, I paid in full every single month. By June I cancelled my ADSL Account and directly app**** for the Telkom 200GB + 200GB LTE Bundle because my Internet was completely unusable, my cancellation was effective in July 2019 and I paid my last installment end of July, so I paid for another month without getting any service. End of July came, I got another statement for R1200, I reversed the payment, because I cancelled, and August I received another statement, for R2400 which I reversed as well, but now I am handed over because of that R2400, which I still owe for what reason exactly? I cancelled, paid the last month and it should have ended there. I still have the original cancellation letter, all my reference numbers for every single callout.

So now my credit record has been damaged, by Telkom, and I will not stand for this. Either you rectify this problem or you will definitely be hearing back from me, you are just a bunch of ******.