Telkom Extremely useless

Actually no STARS for Telkom, i am so frustrated, i have been trying to cancel my mybroadband 50GB with telkom since June 2018, i called so many times and every time someone else tells me something different, i even used their online cancellation system only to find out it logged my cancelation only on 13 July 2018, then telkmo said it was to late after 1st. then they said my contract is not done yet, so i had to pay an additional month for Aug 2018, even though i did not use it for the hole month as i thought it was canceled. and today get another invoice again, i am fed up. dont know what else to do, they are just ***********!