SHOCKING ATTITUDE FROM A SALES AGENT

I am shocked beyond the word SHOCKED! I ordered an online 40 Gig special from MTN online and only received 10 Gig. I queried the matter with MTN direct as I do not have the contact details of MTN online. I Spoke to a certain lady now at 11:05 AM on the 9th October and she refused to give me her name. I continuously told her that I have called in before and I want to speak to a manager. knowing these sales call centres, I know she was going to refuse to transfer me to a manager. SHE IS VERY RUDE AND NEVER LISTENS TO CLIENTS, I WONDER HOW AND WHO HIRED HER. MTN needs to do something about their customer service and sales agents, this is not the first time and I am not the only one who hass received this terrible attitude from MTN agents. SHE EVEN MADE IT SOUND LIKE SHE IS DOING ME A FAVOR, WOW!!! All I want is my contract issue to be resolved and not this runaround I am being given. SHOCKING SERVICE I MUST SAY.... !!!