Telkom's Extraordinary Service

Poor service! Super disappointed. My Account has been suspended for the past 3 months, I have been paying my account every month through debit orders, Telkom's system has been rejecting it causing my account to be behind and account suspended - they debit me twice a month on the 5th and 25th. Now, Telkom has sent my account and all my information (without my consent and breaching the POPIA Act) to credit collectors - ruining my Credit Score unnecessarily. Now I want to cancel my contract with them, but no one is answering my calls on their helpline 081180 or even in store (claiming: cancellations are done through Customer Care line which does work). I'm now being sent around like a headless chicken! I will not be paying for a service that I have not received.