Booking.com shifting blame for booking made

I have booked 2 night accommodation. Confirmation received from them said 2 nights 1 chalet. However, when i got to the establishment i was told that my accommodation would be in two different chalets for my stay. When questioning this with the establishment i was told there was nothing they could do with the way booking.com does bookings who has access to their booking system. When questioning this with booking.com i was told 2night stay was booked and obviously not in two different chalets. Also advising that the owner of the establishment would talk to me before my departure. However, i spoke to owner and was told to take it further with booking.com who is now ignoring my emails seeing i have departed today. I paid a lot of money for a holiday and to enjoy, needless to say the second chalet was crawling with insects and spiders. Both establisment and booking.com are blaming each other and no one is taking responsibility! I need to know what happened as i am angered by this