POOR TELKOM SERVICE

We had a home telkom linr with a month to month unlimited data and wifi contract, our own router with understanding that you can give month notice when you want to cancel. Due to various complaints to telkom regarding no internet connection, several call outs to look at line, no service, we send email to telkom on 8 May 2018 to cancel the contract, only after several months and complaints we received an sms stating that this will be cancelled but be have to pay R712, which was done. In October we recieved sms stating that line was cancelled and back charges would be done. Now we have been listed at itc with an amount showing R1712 owing to telkom. Again after several attempts to rectify this nothing has been done. My name reflects negatively at itc because telcom did not do their job. All correct avenues were done from my side and what now?????????