Bad customer service from telkom mobile

<p>Took out a contact phone in August gave 3 months bank statements time passed and no funds was debited out my bank account till I went in store last week to rectify error of banking details on the system no managers in store went few days later manager tells me not their fault I need to contact customer service I address it to an agent waited over 30minutes on the call for a manager all he could tell me for this error his sorry for what I'm going through he can log a complaint and get back to me with collections department I told him I'm not at fault for arrears Telkom mobile is at fault and the should clear my arrears he says I am liable to pay I can have an arrangement I told him my credit file will be affected I've never had an account before what can he do for me as a customer he says he can't do anything this is really frustrating as a company he had no customer service s****s or managerial s****s not even acknowledging me as a customer just forcing an arrangement what steps can I take as a customer?</p>