WORST CUSTOMER SERVICE EVER!!!!!!!!

I would give you a no star on this one, i have been trying to upgrade my contract since 29th May to of course nothing happening, i was put on a list for ***** and then had that was lifted, i have been trying for the last 2 months to get an upgrade to an iphone to which now MTN does not have in stock no longer so now i have to settle for the samsung and wait to my surprise i still can't get my upgrade because oh wait the call center agent who dealt with my application on the 29th may she is not at work because a loved one passed away ???? sorry so the world and i say this with a lot of respect does not come to an end, someone else surely should be able to assist me further????? how can that be used as an excuse to not preform my upgrade??? get a manager or supervisor to override and remove that one off the system while I'm on the phone no of course we can't do that it's to much like hard work , sorry MTN your customer service is shocking , you know what the worst part about this all, to cancel this contract is going to be just as much as a nightmare judging by your reviews....