A colossal ****-up!

Paid for and received confirmation of my holiday booking only to arrive and there was no booking as the host has not received the information from Booking.com and there was no space available as it was a long weekend. It's now been 11 days and the host has not yet received the payment from booking.com so I cannot get my funds back from booking.com and all I keep getting told is " I have to get the money back from the host" - How does one do that if the host has not received the money yet? Shut this platform down as they are refusing to refund the money. Don't use this site to book and pay for accommodation and/or flights.