Day 3 and I'm still waiting for my upgrade due to backend process/ escalation

<p>I went to MTN President Hyper on Sunday for an upgrade 3 DAYS LATER STILL NO PHONE (firstly the 808 voice over system and online advised that I'm not due for an upgrade however I was advised by a contact centre consultant advised that I was due for an upgrade from 6th July, update your systems for real selfhelp customer experience). The consultant at the store advised that I owe R6, my payment method is debit order how do I owe R6..... I paid R20 and is in credit yet STILL NO PHONE. I spent 50min at the store and was then advised that the escalation was not resolved as the consultant whom it was escalated to has not received feedback and the store will be closing in 10min I should come back tomorrow(Monday). Monday the store consultant called me just to say thay it still has not been resolved , backend is not doing their job and not responding, leaving me without a phone that I will be billed for the once off whatever payment but MTN will not be bothered by the bad experience and inconvenience caused. I'm gonna pay you in time so WHEN IM GETTING MY PHONE???? Please advise your back office the importance of an escalation turn around time!!!!!!!</p>