Still Waiting

I upgraded my Phone on the 16/02/2015 the phone had software issues and i took it back 3 days later as it no longer worked. The phone was Handed in on the 19/02/2015 and i was told that a new phone needed to be ordered (7 Day Return Policy) as the store had no stock. Today on the 10/03/2015 or 16 Working days later i still have no answer as to when the phone will be arriving. You go to the store and hear no phone was delivered yet, on a daily Basis. My question is why cant the store tell me when i can expect a delivery and why must i wait this long for the phone to Arrive. Our company have 12 contracts with MTN and with me being directly responsible for the upgrades on these accounts i can advise that porting to vodacom is looking more and more lucrative by the day