Booking.com made a double booking now have to wait 14 days for refund they dont care if I have to stay at home!

I have been using booking.com for years to book accommodation for myself and my teams that need accommodation. Made a booking last night and paid now they tell me accommodation is not available and it was double booked. Have to wait 14 days to get the money back. All they said is sorry and thats procedure , cannot believe that is how they treat their customers it was a booking for my birthday and because they made a mistake I will now have to stay at home as I dont have double funds for another booking. I will never use booking.com again. Very bad customer service and they really dont care about double bookings!