Infuriated by poor customer service

I had requested a disconnection upon my resignation via work email at multichoice however as *********** as they are they never disconnected and i asked it before the end of november but they kept debitting me and i reversed the money as it was not supposed to be on in the first place.december came and they tried again to debit my account and i reversed again.now they want proof from the email i have no access over and i have an overdue amount that o was promised it will be reversed and now i want to activate my account i see an overdue amount.may my issue be resolved else i would have to go to consumer act as i will not pay for your incompetency i refuse..i hope this will be resolved..my id ********** 049081..thats my id