Booking.com

Saw a nice place on booking.com, which only had 1 space reserved, I tried to book but after putting all the details it told me that space was taken and I should look for a new one. A few days later booking.com takes the money ,even though I never received confirmation email or anything to confirm bookings. I emailed booking.com and called them about this with proof of everything still haven't gotten a response. The only way to cancel was through the email which I never had,the place which we were supposed to go at says they can't refund me only booking.com can since they receive the money 10 days after the guests leave