Account still not cancelled! Worst customer service ever!

I have tried and tried and tried and tried to cancell my telkom line and adsl after they failed to move my line in june last year. My logged queries have gone missing on their system multiple times or marked resolved. Now they expect me to pay for the monthly fees because of their incompetence. Do i need to take Telkom to court? Talk about alienating a customer that has been with them for twenty years!!! I have not used one bit of data since I moved house and I would still been a customer had they moved the place. The only request i have on record (that wasnt deleted by telkom) was an email from 30/08/2019 sent to ********** and ref ********** 1, ********** , ********** 1.