Telkom still hasn't cancelled my application/order

I app**** for a mobile phone on Monday with Telkom. The next day I called and cancelled the application as I no longer required it. Later on the day I get an sms that my account has been approved and to expect a debit order within the next 3 days. I called to cancel again and they were offline. On Wednesday I tried several times to get a old of Telkom, it's either I hang up after waiting for very on the phone or they were offline again. Finally got through to someone in the afternoon who said he sent off an urgent request to cancel the application before my account was debited. This morning Telkom debits my account!!! I still cannot get through to someone on the phone who can assist me with actually cancelling my application/order and reverse the debit order.