Booking canceled and no replies or refund in an emergency case

I used the agency a few times before and never had problems. However, this time, I booked flights with them, made the payment, they confirmed it and my tickets were canceled, and I did not receive any refund or any other tickets.It really become an emergency situation, as they got my money, the flight is supposed to be in 3 days and I do not even have money to make the booking through another agency. I wrote many times to them in a short time, but they did not reply any of my emails. The email informing about the cancelation said that I should make new bookings and they would transfer the money to the flight company, however, I am unable to make new booking with them. Really disappointed with the Travelstart.