Amazon India — Amazon's pathetic service

Address:	110094
Website:	www.amazon.in

I would like to draw your kind attention towards the issue I am facing after ordering Apple iPhone 5s (Space Grey, 16GB) (Sold by: Notronics). I ordered it on 11 September 2016 via Order#[protected]. I have paid delivery charges for that also (as per my experience with Amazon and other sites like Flipkart, Myntra etc, I have not paid any delivery charges if my order amount was more than Rs500/- and in this case It was more than Rs20000/-). It was expected to deliver by 16th September 2016. Today its 20th September 2016 and still it has not delivered yet. I have called at customer care 3 times but did not receive any satisfactory answer.
Have I done any mistake by placing order at Amazon?