MTN not even trying to keep clients.

I've been trying to upgrade my MTN contract, I'm due for an upgrade but I have to pay the months left once if I want to upgrade now. This is a good way to drive away clients like me. So I'm just going to cancel my MTN contract and use Vodacom as they don't really care to keep there clients happy. If they will help me to upgrade because I really need a new phone then I will be happy to stay and keep paying. Otherwise not.