MTN does business the same way Mugabe runs his country Zimbabwe. Before the power-sharing agreements in Zim, he arrests the opposition leaders and then starts releasing them one-by-one to show that he is making concessions and the whole world applauds, why, we 'the situation is improving...' my behind.
So MTN does the same, do not give your users what they want and then add innovation by slowly (one month rollover after two years) letting them have what they want, and everyone is happy 'we are making progress....' by behind.
and about the 'big bang for your money...' all that means is that I wont drop my prices (since you suckers are still paying) but I'll be a 'caring' network operator and use some lubrication...come-on they're still screwing us.