Musafir — Ticket not confirmed after payment.

Hi - I booked ticket for my parents from Del to new York from musafir.com and got a confirmation of successful payment and was waiting for the ticket. However, they didn’t book the ticket and are now coming back and saying we can’t honor your request now after ticket prices are up now. This site can’t be trusted and should be black listed in India. I want the compensation of price difference loss which I had to bear because of their mistake.