Flipkart — Received a duplicate product and not processing for return from past 20 days

Address:	560001
Website:	www.flipkart.com/order_details?order_id=OD106690404682102000&otracker=nf_orderItemUpdate_OD10669

I have ordered BlackBerry Z3 mobile from flipkart on 1st of August, 2016 via Order No: OD[protected] and i got that product delivered on 6th of August, 2016. I tried to update software for that mobile, but i couldn't do that, then i approached to the respective services centre for the same issue. Then they told it's a fake mobile, then i placed a return request on 8th of August, 2016. Then flipkart customer care executives came to me to pick the product, but unfortunately they also told me that, they can't take the product due to mismatch of 16 digit IMEI number (attached screenshot), they came with 15 digit IMEI number. I had intimated the same to flipkart customer care helpline. Then they told within three days we will resolve your issue and refund the money, but unfortunately since last 15 days they are extending/delaying the return request and i have not received any response from them. They are cheating customers like anything. Unnecessarily i'm paying interest to my bankers because i paid from my credit card. I just wanted to know one thing very clearly. Flipkart wants to take the fake product or not??. I attached the screenshots for your reference. Please take this issue on high priority basis and punish them in serious manner. I'm ready to proceed in legal manner. Looking forward for your positive reply.

Thanks and Regards
PVSR Siddhartha