Telkom unaccessable "service/help"

Have just been told that I cannot cancel my telkom landline account until paid in full. This account was accumulated via unforeseen circumstances and not paid. I have now started paying the account which was then suspended. End of last week I received another account with the current billing on even though the account is suspended. I do expect an account with the outstanding amount and interest on it but see no reason why I must be billed for something that I dont use/and or cannot access. So how does anyone pay for the account in full if they just keep adding current billing onto it with no service? All the numbers listed do not give me any access to anybody who will suspend the current account until the arrears are settled. Is this their way of making money?