Hidden contract upgrade fees and poor customer service

They are ******. When you upgrade a contract they won’t tell you about the actual penalties you will incur in the form of admin fees and whatnots, which are unreasonably high. I’ve been charged over R700 in admin fees for merely upgrading a contract. I’m cancelling MTN. Also, their customer service agents don’t have any customer service at all - I spoke to two agents, one at the MTN store where I took the deal and another one from MTN customer care line 135, both of them are concerned with arguing why they are right and why I am wrong and in the end they present you with a take-it or leave-it decision and that you this is how things work. They have no solution-oriented approach to customer queries.