Pathetic Customer Service and Response Times

I took out a cell phone contract for a S8 Plus in October 2017. The contract was supposed to have ended in October 2019. I have been calling them since the 25th September 2019, they continue opening case numbers and solving the cases without any proper responses. I requested an email of cancellation, they refuse to provide that either. I am sick and tired of TELKOM and their continuous issues, I will now be referring the matter to the Ombudsman with a copy to Consumer watch to be broadcast on air. Can they not terminate a simple cell phone contract. Apart from that, some of their staff are arrogant to make matters worse like Andiswa Zulu whom I communicated with today. Also I noticed that my case of the 25th September is conveniently deleted on my app, even the ones from early November, the only one remaining is the last call in November. Telkom are cheats and rogues.