Goibibo — booked ticket changing the dates by default and not refunding my amount back

They don't return the amount and cheat us. Booking ID:HTL5LN7JTQ and total Rs.2920 has been deducted.i tried booking hotel using goibibo for weekend that means 20 and 21st but ticket got booked by selecting default available date that is on week day 22nd and 23rd June. Within 5minutes of booking I called customer care n asked them to book another hotel available on same date or refund the amount as go cash.but they clearly denied it.It is clearly mentioned on their site that we can cancel the tickets with 100% cash back before 24hours of booking date.In my case whole week is left and still they are not returning the amount.