Ignore their customers

I cancelled services I don't use and stil get billed and threatened id I don't pay up. The call centre simply ignorea my requests. Today, yesterday and the day before I phoned, cancelled services again and to move my adsl line to my new adress and call centre took my details only to hang up the phone in my eat with no results. I opinion on this is that the CEO of telkom should be replaced and my suggestion is with immediate effect.