Debit Order Limit Unchanged - No Notice - Account Suspended

Such distasteful service from a well-established corp. My adsl package changed from a capped to uncapped account based on a service agents recommendation (i was on a capped account for the same price as the uncapped plan) last year however the debit order amount was not corrected and it seems the package went up by R50 monthly. The account has since accumulated arrears to about R600 and the line was suspended since the 12/07. I was not aware as I know the value of the debit is around 700-750 monthly so i do not check statements as all my debits were successful. I have since paid in the arrears however my debits were cancelled, so i was informed by a chat agent that i still have R750 outstanding for the service period 7-jul to 8 aug. 1st issue - no one contacted me to say 'miss your account is falling in arrears please adjust your debit order limit to avoid account suspension', advising your customers of this will help you retain them better because that is GOOD customer service which clearly Telkom cannot provide. 2nd issue - why should i pay for services which has been disconnected since the 12/07 till date? I will pay in this amount however i want a rebate for the service disconnection period as this issue was not my fault. Thereafter im cancelling my service which i've had with telkom for more than 3 years. Extremely disappointed and frustrated. Please correct your customer service methods so other people do not face silly issues such as these.