Pathetic service as bad, if not worse than MTN

I have done a telephonic upgrade and I am waiting for my phone to be delivered and I have struggled to get through to track my delivery - I can't get through at all! And the only number I can call for this is ***! Not even the call centre can help me! I have tried online tracking which does not work either! And this is in addition to waiting for 35minutes to be helped in the store and giving up before they even helped me. I even asked for the manager and instead received a lie. <br> Is there a way of canceling the upgrade because I have had enough!?!