Bad Service with upgrade

I upgrade my phone on 11/5/2015 just to find out later that the wrong package were loaded. I phoned this morning in and try to resolve the problem but all the call center is not listening what the client say. There is no Client service or Customer Care at MTN. Most of the time nobody phone you back they just promise that they will and you never hear from them again. Every time you phone in you must start all over again to explain everything to them. The client is always wrong is the message that I get from how they treat clients. I can understand why clients get mad and sometimes say things that they don't mean. I think I will cancel the upgrade because I have 10 days cooling off period. And wait til the contract expire and then cancel it MTN is not the only cellphone network in South Africa and they like to lose clients. MTN can close there doors I can't see what they are still doing they can't help you with anything, and the problems must always be esculated and the client must wait for the answers, if you are lucky to get one back. The customer must always phone back!!!!!!