complains

Good day I have experience very huge and unacceptable promise from telkom since i joined there network past 6 years ,i bought modem in contract ,i speak with customer care about changes of my debit I'm my account coz my permit will going to expired and my bank account will be closed ,so they give the bank details from absa which i did manual payment but they keep accumulate the bill to me and they suspend the service,last week thursday 15 august i speak with one customer care for areas payment which i didn't the payment 0n the 16 august ,during our conversation she promise within 72 hours of payment your modem will be reconnected but up to now nothing is connected ,i have been visiting the branch where i bought the modem ,i told that land i want to terminate my contract coz i can't pay for the services which am not using it ,she respond to me i have to pay telkom the remain months or will blacklisted me,they are more welcome to blacklisted me than to delivery the promise ,i tell her is better to black list than non compliance with telkom services provider.i want this matter to be resolves asap coz they keep accumulate the bill ,while i make payment arrangement.i pay the money more than week now but no service ,not connected.