Bad customer services

The experience I had with Charmaine at dstv when I called the Durban call centre was appalling. She didn't listen to my query effectively and only when u started to get angry then she understood what I wanted to do. Most of the time she spoke over me and I was really disgusted by the services u received from this agent. I had to shout in order to get her to stop talking so that I could get my query sorted out. I hang up hopefully to get through to another agent as she was not helpful. I wanted to update to dstv premium and she said that I would be pro rata from now till the 7th and I would need for the days used till the 7th she didn't advise me on how to pay until my sister who over heard the conversation asked to ask her if we could pay at pick n pay. She was not at all helpful in advising me on how to pay. Her attitude was terrible by far the worse experience that I have had with dstv and I have been a loyal customer for many years now and the way I was treated was not fair.