Telkom customer service has been like this for ages. I had similar chat logs with them, where they do not provide answers to simple questions, gets rude and then cut of the chat.
I have received service that would have gotten people fired if it as at my company, and even complaining to so called senior people, gets the same or no response. They really have atrocious service and what's worse is that they don't care.
I only laugh when I read all these articles with their chiefs telling us about their dwindling numbers being because of "this and that" or how they are focusing on service. I am convinced that a substantial chunk of their drop off rates are as a result of their customer service.
They actually have great products and offers, generally much better than their competition, but they have the worst service, hands down. Just look at the threads on here about cancelling a service. It is the stuff nightmares are made of.