[Resolved]  Flipkart — iphone 7-fake product

I bought iphone 7 though flipkart on 17th may 2017. Since the first day the phone has a floating part inside which is rattling. Upon shaking or moving the phone, the part inside is also moving. I have been visiting apple service centers since a month now. All in vain. Finally after a month of agony i am told that the parts inside the phone are not genuine. There has been an unauthorized access. Apple service center refused for helping saying the product is not genuine and upon contacting flipkart customer care i am told that i need to get a proof of it in written from apple about the product being not genuine.
As a customer, i spend money, take all the pain and now still, there is no resolution. I feel harassed and am suffering for the decision of buying a phone.
I have been a regular customer of flipkart and have never faced something like this.

I need a resolution at any cost now. It has gone above the tolerance.

Thanks