I got the mail below. Is this the partner support line?
Thank you for reaching out to Booking.com
We're truly sorry for any inconvenience and understand how frustrated you might've felt.
I checked the current status of accommodation ID *** and the status is not "bookable". Please kindly contact our partner support line to open the calendar and get further help.
Thank you for your time and again we sincerely apologize for inconvenience.