No one can assist a new customer

I visited trade route mall telkom mobile to enter into a new contract on a sony experia Z3 on saturday 25th april 2015 and they did not have stock of the phone, an order was placed and I was told they would get delivery on the coming thursday the 30th april. On thursday they apparently did not get delivery and I have been calling everyday since then and no one can tell me when the phone will be coming or who is responsible or who I can contact, the only answer I get is that they don't know.furthermore I have been trying to get hold of any of the telkom mobile direct stores at the glen, southgate and maponya mall but no one answers the phone and the tech at trade route mall has said to me that they just don't answer the phones. What kind of service is this especially to a new customer! I have been told by trade route mall there are 8 other people waiting for the phones which are mysteriously the only phones which have not been delivered and I'm sure they are getting the same frustrating run around answer of I don't know! I have gotten to the point that if I don't get a solid answer as to the time line then I will take my business somewhere else as new business is clearly not wanted