(EMERGENCY) How to buy iPhone in Delhi?

Please read this, don't answer without reading all infos: this is the chance for me to get an iphone 3gs, for which i'm dying to have one for years. The problem is that i don't have time, dad said tat he will get me an iphone only if he could buy it near delhi airport and we don't have time to go any where far from the new airport. THIS IS THE ONLY TIME WHEN I CAN GET A IPHONE 3GS. So plz let me know how to get an iPhone near the new indra gandhi delhi airport as soon as possible under one hr. THANK YOU.