Apple India — iphone 6 64gb grey

Address: 560001

Website: www.apple.com/in

I am using an iphone 6 which suddenly gone bent in the side of the sim slot.
I dont know how it happened. My phone didnt fell, nothing came and fall on it.
But day before yesterday when i gave it to my friend he asked what happened to my phone it has got a bent. That was the very shameful situation for me because its an iphone how will a bent like this happen. I was really shocked at that time. I didnt expect anything like this from my iphone. Its not any other brand obviously i will feel ashamed of.. I have one more issue with my phone. There happened to be some mark after using a case for my iphone. It can be clearly seen in the photo which i am attaching with the messsage i need a solution for this too. I need a replacement for my phone. Ill tell you that it is not under warranty but still an iphone shouldnt bent like this. I need an answer immediately.