It is impossible to delete a listing from booking.com. Admins will not delete listings and there's no way to delete it yourself as the owner. I listed my Hamptons house and a year later someone booked a room on the same day while I was in Costa Rica and I got a call saying they were at my Hamptons house. They called booking.com and cancelled their reservation. Booking.com called me to confirm that it was cancelled and I told them to delete my listing. The listing has not been deleted a month later and someone just booked a bedroom for 2 days in September after the house is sold to another owner.
It is impossible to delete a listing from booking.com. Admins will not delete listings and there's no way to delete it yourself as the owner. I listed my Hamptons house and a year later someone booked a room on the same day while I was in Costa Rica and I got a call saying they were at my Hamptons house. They called booking.com and cancelled their reservation. Booking.com called me to confirm that it was cancelled and I told them to delete my listing. The listing has not been deleted a month later and someone just booked a bedroom for 2 days in September after the house is sold to another owner.