Telkom landline account termination issues

Hi I am trying to terminate my Telkom account since 7. May. The main difficulty is linked to the fact that Telkom has outsourced customer care of account-related queries to a company called Easybill. This company can only be reached via email. For four weeks they have insisted that I have to cancel myself my account via the Telkom online portal. However, this requires that my landline account is linked with my online account which was and is still not the case, because it could not be achieved despite their intervention. Finally on the 8. June, they agreed to let me terminate my account via a cancellation form which they sent to me. I returned the filled-in form only on the 6. July, because I was on holiday in between. Since then, I have not heard anything from Easybill nor Telkom, but I was again charged the monthly Telkom landline subscription fee in August. So, my account is obviously still active. It looks like I have to get my legal advisor involved, because Telkom does not seem to be willing or capable to close my landline account. Regards, Sebastian