Can anyone please tell me how to contact Booking.com. I'm having trouble with getting a calendar

Hi everyone! We're a tour operator from Krakow, Poland and would like to start working with booking experiences division of booking.com. Do anybody know how can

Hi... we get yellow cells in the calendar, trying to see how to get rooms available.

Partner please help me my business is very slowly please help me and boost my hotel business Thank you so much