Service Cancellation

I want to stop a line to my property in Northriding(Randburg) and so far I haven't been able to. I filled a request for that on 28-12-2015 and by the end of January the service should have been disconnected. Today is the 1st of March and the service continue to run and I have been billed even for February which what I was trying to avoid. I have been twice in The Telkom offices and they even escalated the matter by writing an email to get the issue resolved. So far nothing has happened! I would like the line stopped with immediate effect and refunded for February. I have an order number A***4 and case number CM361624. Thank you.