Service cancellation

onthe 3rd of April 2017 I sent through a service cancellation request through to telkom I received a call back in a few days about my service cancellation and was said I need to pay the last months bill of my account all good and well paid the amount.The following month I received another bill from telkom wich I only hadto pay line rental phoned telkom only to find out that they only cancelled my data package without the whole line and that that amount were outstanding agreed to pay that amount and put in another service cancellation on the 3rd of april 2017 did not get any feedback from telkom up untill August 2017 where I received another account I sent through another service cancellation request on the 27 of september 2017 did not hear anything from telkom ever since today 23 January stating there is an account balance of R1057,now I am asking you when is my telkom line going to be cancelled and that the amount outstanding should be written off I feel.How many service cancellation request must be sent through in order for my line to be cancelled I am fed up.