NO feedback/activity from cancellation department

Good Day<br> I am trying to cancel a account at Telkom but without any success. In the meantime the debit order is running every month!<br> <br> Send all the relevant documentation to [Email Removed] on 09/12/2015. Received an auto-feedback email: We hereby acknowledge receipt of your cancellation request. One of our agents will contact you within 48 to 72 business hours. <br> <br> Send another email 04/01/2016, received the same response. Till date, have not heard ANYTHING from Telkom. <br> Phoned today, but the lady at Telkom advised me, she can not help me, cancellations can only be handles via email. <br> <br> Now where to from here? Do I block the debit order at the bank and receive a huge account and summon in 6 months?