Very poor service with cancellation of my line

Cannot get my line Cancelled. I moved house and couldn't get my line moved since March 2018, because the online system never got a move order number assigned to it even after numerous calls and follow ups. Call center manager helped me get a new line. Now I have been trying to cancel the old line since June and I am just paying for both. Doesn't help to stop the debit order because they will then just cut off my new line I am using. Reference number: ********** 9 was closed by telkom and the line was supposedly cancelled, but surprise surprise, I am still being billed.Logged new disputes in September: ********** 5 and ********** 8. Still no response. I have even filled out a cancellation form and sent it back to the support agent that assisted me. Calling the call center you get told they will escalate the problem but don't know who they are escalating it to, because nothing happens. I even get told someone will call me within 10 business days. What a joke... How does one cancel a line? Whats left to do? Cancel my debit order and just wait for someone to call me about payment? This is pathetic service. I think I should just put in a cancellation for the new line and go LTE. ***** Telkom.