6 WEEKS STILL NO CONCRETE ANSWER

on the 30 December my dad renewed my contract at MTN for the package with the tablet. They didn't have any stock, however on the 4 Jan 2016 i was able to collect the tablet. Upon getting home the sim card got stuc in the device, upon taking to out it damaged the device and it was returned to MTN on 05.01.2016. It was then sent to the warranty centre who said it needed to be repaired, the repair centre stated on 27.01.2016 that a new device needs to be issued according to them they have no stock. To date, still no device, each time i have called i've been told that it has been escalated and they can only provide information on the system. I have been patient , i finally spoke to Zanele the area manager and i get the same response, she will advise, she has escalated to a senior person who has also escalated to someone senior. REALLY? Oh they understand my frustration! Do they really? My question is that they had no stock at the contract renewal, however a device was delivered to the store within 3 days, now because it's a replacement, it's taking so much longer. 3 weeks and counting. I need this resolved by the end of this week as this service is not only pathetic, but ridiculous.