Terrible Customer service

MTN Online consultant called Sabelo if I am not mistaken. He called me back to help me with getting my plug-and-play router (asked him to explain what that meant; he responded in such a way as to make me feel dumb) but the service in explaining was horrible. Please teach your consultants customer service, and that just because the offer is cheap, doesn't mean we need to be subjected to disrespect. I asked a simple question of "Why is the Pro Rata starting today and not on the day of the activations" His response "You are actually supposed to be paying a lot of money for that, what is R269 x 2." I am just appalled. Sometimes customer service is everything and explaining to someone like they don't understand. My call lasted for 5mins 25 seconds then he hung up.