Nafa.in — flipkart gift card showing zero balance

I had purchased a gift voucher worth of rs.1000 of flipkart from nafa but while applying the same in flipkart it shows there is no balance in the gift card.

I have already send many mails and message but they do not reply anything. I had also tried to communicate with him through chat, whatsapp. But still any reply from there sites. My order no. 60834