I had booked one air ticket from travelchacha.com but the transaction failed. They promised me full refund within few days, but it was never done. I sent number of mails and called them many times.
But they promised every time that refund will be done on same day and asked me to check after 2 days. But there was no refund.
Then I had come across the reviews on Mouthshut and realized that they will not refund money unless I do something different than the usual followup.
Then I contacted the airlines for which I wanted to book the ticket and complained about this travel agent.I also asked them strictly that how they allow such people to book tickets on their behalf.This trick worked and the airlines immediately asked them to refund the money.
Surprisingly, I started getting replies from travelchacha and one day, the refund was actually done.I think the people who are still struggling to get money from travelchacha should try this approach.
They should contact to respective airlines and complain them about the issue. They can also complain to organizations like IATA, dept of tourism (India) etc to build some pressure on this defaulting travel agent.