Dont use Telkom Internet!!!

I had an internet service with Telkom. I left the country in Sep last year (2017) and tried to cancel my service. I was told to send in a cancellation form. It is now July 2018 and my service has still not been cancelled. I have called in repeatedly called in, emailed and escalated and just get told to send in the cancellation form again. Of course, the debit order has not been cancelled and is running month to month. Today I emailed again and was told that there is a new procedure that I must log the cancellation myself online. I am being given the runaround just so they can keep the debit order going for which I'm sure I won't get a refund. Also I was using this service for for 2 years before I cancelled and had major problems with my service, I had intermittent service and during my contract I changed my bank details and let Telkom know. Every month after that My service would be cancelled due to non payment - they were using the old bank details - every month I would call and they would fix but of course I had to wait for 7 days to be reactivated which meant that I was without service every month for at least 2 weeks and of course was not reimbursed because was told it is my problem because I changed bank accounts. I know there is little choice in South Africa but avoid their services if you can!!!!!