NO JOY WITH TELKOM CANCELLATION

On 30 May 2019 I cancelled my Telkom account online. I have received reference number after reference number - originally being told my line needed to be released into the holding pool. I confirmed this and received a reference number from the company where it apparently was "being held". I have phoned and been given reference numbers for immediate cancellations on more than one occasion (todays reference is ***A) but still no cancellation has been done. We will not pay a cent for our Telkom account dating past 30 June 2019. What can I do or who can I speak to to ensure that our Telkom account is cancelled and done so with immediate effect?