Travel Chacha — Travel Chacha Not Refunding Money

I have been at the receiving end of the TravelChacha who haven't refunded me my money. I had made a flight booking for my cousins from Guwahati to New Delhi vide Booking ID - AWISCD. A sum of Rs. 8618 was deducted from by HDFC Bank account via Order No.TCF-[protected] which was CCAvenue. However they couldn't process the ticket from their end due to some server issues. On 23rd of January they agreed to issues be a full refund within 2-3 working days which they confirmed be via an email. I have been waiting for my payment since then and have been calling them repeatedly and they assure me of a payment each time but I haven't received any from their end so far. Can you please help me with this issue?