Struggling to cancel services on Telkom landline

I phoned call centre in March in order to cancel one of the landlines as well as the ADSL and Biztalk services on that particular line. I was kept waiting on line for 30 minutes, and then told to email the request. I emailed the cancellation request as well as all corresponding documents on the 27th of March for cancellation to become effective end of April, and received a computer generated aknowledgement email.<br> Phoned end of April to confirm that services have been cancelled and was kept waiting for over an hour.<br> Phoned again today 6 May to confirm. Was kept waiting for 30min to speak to the accounts department, where I was informed that cancellation has not been done, and was put through to cancellation department. I have been waiting on line for over an hour!!! I can't keep phoning every day! Please cancel the services requested immediately and do not even think of billing me for the cancelled services!