Waiting 2 weeks for store to receive their stock

I went to the Mtn shop on 16 June 2015 to upgrade my contract to S6 Edge, the person there told me they have no stock left and will order, the stock will be at the shop in that same week, I called them on That Friday 19 June 2015 to ask what the problem is, they told me that they ordered the stock but it has not yet arrived and that it will arrive in the next week, I called again on Tuesday 23 June 2015 again, a week later, the lady said maybe later the week or even the following week. I think this service of Mtn is very poor. I told the lady at the shop that my current phone S4 Mini is broken now and that I need the new phone urgently... it has been 2 weeks now and I still have no phone. Is this the service that Mtn contract customers sign up for?