NO RESPONSE REGARDING CANCELLATION BUT SENDS BILLS

i have followed the procedures and processes regarding the cancellation of my contract with 8ta but i have not received a response and i've sent emails upon emails, called the call center, went to the store but my request falls on deaf ears. i have completed the full term of 24 months and do not wish to renew my contract and asked for a cancellation. i have paid for the month of cancellation and for the following month, i have filled in the cancellation form and submitted it at the store which was asked of me. however, every month thereafter i am billed for my contract and i received a statement with an outstanding balance of almost R3000. this is ridiculous. firstly, they suspended my contract without warning then when i want to cancel due to not wanting to renew, they still bill me. i have been emailing Granny Malinga and receive delivery and read receipts however, i have not once been afforded the courtesy of a response. i am unsure how Telkom employs such *********** staff. Granny Malinga is based at the call centre, her email address is [Email Removed] and i want my contract cancelled immediately and the outstanding amount should not reflect on my name.