MTN has the worst customer care/service

Want to upgrade to the new iPhone only to get told by 3 separate shop that its not getting launched in South Africa. Called customer care to cancel my contract because they are the only network who doesnt have it and got told that it has been launched and they have stock. Went back to the shop and told yes they have it will take a week to get there if I order it today. That was 3 weeks ago. Have tried to phone the shop and nobody answer, have gone to the shop waited in a 30 minute line only to get told that they dont have stock and dont know when they will get it.