Amazon.in — Not refunding money or product after return pickup

Address:

New Delhi, Delhi

Hello,
i bout an i phone as on22nd of july for rs 46098.00 INR from amazon.in,
it was delivered me as on 23rd of july, i paide 46098 in cash on delivery, later while i open the packet i found that is phone is fake/copy/counterfitted.
i asked amazon to refund it, first the send me an email saying that my refund has been approved and i will get theis amount in 2-4 days, and told me recycle the phone,
but i kept the phone till i get my refund thought,

i did not got the refund, i again called customer care of amazon.in they told me a new story that phone was never delivered to me and refused b y me at the time of delivery, after many follow up and calls they asked me to send the images or pictures of courier and phone, i did that and send it too them again,
than they told that retrun pickup has been arranged and after return pickup i will get my reund, 9th of August my pickup was done for retun, (i have acknowledgement silip also available which provided by ATS courier services),
and now i have lost my money and phone,
they do not giving me my money refund back or the kept my phone and tellling again that as per their tracking details phone was not delivered to me
so they can not help me on over this.

PLEASE HELP ME I CAN NOT ABLE TO BEAR A SUCH BIG LOSS
I LOST M YEARLY SAVING, which i saved with the dream of i phone
i dont have nything now, neither phone nore money ;-(