Booking.com

Heavenly Elms so nicely advertising on booking.com. They allow me to book a room that was never available, deduct the money then send me a cancellation request because they don't have a double bed. Upon asking about my refund they said booking.com needs to refund me. Booking.com then says it will take 7-12 days to refund me. What **** is that???? I needed that booking because I'm travelling and for them to deduct money i needed to use for another booking it ****. What if that was the only money I had. I booked last week and I'm still waiting on my damn refund.