Flipkart — I am complaining about the refund

Website:

www.flipcart.com

I have waited for the refund from 25 August. I have called them many times but the only response I get that my refund will be within 8 buessiness days. I had 1598 as my refund from which I got 799 back. remaining 799 as not been refunded to me. they mailed me that they have given the transaction but my bank says there is just one refund from flipcart. details that they provide is INR 799 refunded on 8 sep 2015-74332745252525126288815 INR 799 refunded on 25 Aug 2015-74332745238523759670069