Worst Service and my Son is without a birthday gift a month after ordering it.

I was called to perform my upgrade on the 25 March. I chose a duo phone upgrade so that I could gift my son a phone for his birthday. I kept getting messages to say that it was out of stock. I managed to get hold of someone after 40 minutes to be told it wouldn't be more than two weeks until it was sorted out. We are now over a month, its my sons birthday tomorrow and I don't have his gift for him. This is the worst service, I cannot call after hours or on public holidays. When am I meant to call when I work during the day? My son is going to absolutely heartbroken that he is going to wake up on his birthday without a gift. This has been a terrible experience. Absolutely shocking!