Delivery service makes me change my mind about MTN

I cannot express how highly disappointed I am. Courier company has still not delivered my new phone, the people make empty promises to call back or sort out things and nothing is done, why?/ why give MTN a bad name?. I confirmed for my device to be delivered before 4:30 today!! (16/03/2016) and now I have to go to hello Pieter just to get someone to actually help me because the idiots working there cannot follow instruction and actually have it sent out to me, so now I must wait in this situation just so some ****en idiot can do their job properly. I'm done waiting on the ****en phone and using all my ****en airtime that I still have to buy from MTN just so I can get service!! I confirmed something and you cannot deliver on time! This is totally unacceptable!!!! What are you going to do about it??? I have been cheated of all this ****en money in using artime just to follow up for something that I don't have but will be paying for!!! I want this sorted out!!!!!!