GIVEN A FAULTY PHONE

I have an existing contract with mtn, I took out another contract on 25/10/2015 an Apple iphone 4s at MTN in Kenako mall Port Elizabeth. I collected the phone on 25/10/2015. When I received the phone the guy who was helping me told me he could not switch it on as the battery was flat, I should take the phone off and charge it first which I did. I charged the phone and switched it on but it gave me an error that says \could not connect iphone". I could not go back to the store as it was closed already at the time. I went to the MTN at meltlife plaza the next day which is closer to my work and could not help me"