Minimum booking and canceling short tirm bookings


this is truly impossible to reach anyone from booking.com to first cancel all the bookings that are short tirm. I thought that since it synced with my Airbnb it would tske all the date from it. Now i have 4 standing bookings that i need to cancel and i want to change my profile to only 1month and more. HOW DO I DO THIS?? Also how did it start booking when my property wasnt even verified?!