Poor Poor Poor Telkom Mobile Service

Cancelled a contract with Telkom Mobile a month and a half ago and I am still being billed for services. I no longer have a contract with Telkom - why are you billing me????????????????? Tried to contact their customer service number - held for more than 20 minutes. Eventually after speaking to someone I was told that their system is offline!!! I must phone back in an hour!!!!!!!!! what disgusting service you provide your customers!!!!!!!!! contact me back on ***as a matter of urgency!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!