Can not phone on both cell c contracts and pathetic customer service received from the call Centre. Planning to cancel my contracts

Cell c could not phone out for several hours on both my cell c contracts that I have. Phoned the call Centre to inform the call Centre agent about the problem, end result phone dropped in my ear. Phone back again to complain about poor service promised that a manager will phone back to explain why I cannot phone out. All my accounts paid never had any trouble with a debit order or them taking my money needless to say I am still waiting for the phone call from the manager