EARLY UPGRADE

I have been with MTN contract for more than 5 - 7 years now and to my surprise I called them today(30/08/17) to find out if there's a possibility for an early upgrade as my current phone is giving me problems and only due for an upgrade on the 01/10/17 but because of my billing I can upgrade on the 28/10/17, mind you I was on hold for this department for over 23 mins, then spoke to Matumelo who said she can't authorize the early upgrade and put me on hold to confirm with supervisor Ahmed who also he can't because my contract is only on 18 months, Matumelo then said she will have to see if she can get the manager to look into it but they are in a meeting I will have to call back later but not sure when, can the manager not call me, NO they don't call out, can you Matumelo call me "I can't promise because we are too busy" What kind of service is this 2 MONTHS PEOPLE I CAN PAY YOU THE 2 MONTHS HELLLLO MTN, you have your own staff members that have ****ed you for millions here! Can someone look at this matter, I don't want a phone for fun here.