I joined Booking.com August 2018 and had had only 2 customers when I maed the decision not to continue with this service. I added Booking.com as a secondary service to attract more clients. Well, I am not satisfied with its logistics. For example, I had many reservations and cancellations on same on the same day. I have had weekends lost because clients did not show up. When I actually spoke with a Booking.com representative (I wished I remembered how to do that) about the cancellation policy, they told me that I have to deal with the client directly. Someone who I don't even know!
Needless, to say, I wanted to cancel my account. Now, almost a year later, I am still getting customers arriving at my rental with Confirmations through Booking.com. I've sent an email message to Booking.com and have received no response. It is very frustrating not to be able to close an account and have to explain to frustrated clients, no fault of their own, that their reservations are not valid.
You have features such as "Payments by Booking.com" and "Online Payments by Booking.com" where Booking.com handles all the payments. You could have protected yourself if you would set your policies more strict and properly choose your payment method.
Canceling your account: https://partner.booking.com/en-gb/help/legal-security/how-can-i-remove-property-or-end-my-partnership-bookingcom
If you have confirmed bookings you must honor them as per contract. Least you could do is, close availabilty for your property so it is not bookable for future guests.
If you are not able to do that it's best to contact Booking.com that you can not accept these guests. They will find another place for them, but you will be charged at least the commission amount.
My suggestion would be to not get suspended because of non-payments etc.. Keep in mind that Booking.com, Expedia, AirBnB are one of the top online travel agencies and most popular among travelers and their users are just growing.
Maybe in future you'll decide to join BDC back, but you will not be able too because you'll be suspended.
I understand what you are saying, but it should be easier to cancel your account. Im facing the same problems and the link you are sending is not leading me to canceling my account unfortunately. I feel like Im in a difficult puzzle... I understand Booking.com is a business, but my oh my, it should be possible to cancel the contract