TRYING TO CANCEL AN ACCOUNT WITH TELKOM IS A NEVER ENDING STRUGGLE!!!!!!

We phoned Telkom on 22 March 2017 to cancel our account with them, and they told us it will take a month to cancel. We received an account from them for the next month (the same account that was supposed to be cancelled). We phoned again on 07 June 2017 to cancel the account, and once again was told it would take a month... We yet again received an account for the next month - so it was STILL NOT cancelled! We phoned AGAIN on 17 July 2017 to follow up, they said that we will not be charged again seeing that it shows on their system that we have logged a request for cancellation. With no surprise, we once again received an account for August!! We have tried several numbers no already, and nobody can assist us?? We are being charged for a line that does not work anymore, so they have cancelled the line, but not the account?????? SO HOW DO WE CANCEL THE ACCOUNT????????