Worst online booking platform ever

This online booking platform is the worst ever! Firstly they do not adhere to company policies at all, we numerously requested no bookings to be accepted without confirmed payment. We have requested a refund to be made to a guest who cancelled bookings BEFORE WE RECEIVED PAYMENT from Booking.com, 2 months later guests still did not receive the refund and we refunded the guest, sent them the proof of payment as well as clearly stating the full refund has been made to the guest. 1 month later Booking.com ALSO refund the guest and want to keep us responsible for the double payment. They terminated our contract and after numerous back and forth emails they got their legal department to contact us. 15 Minutes after we sent the supporting emails to their legal department we were no longer held responsible for the double payment and our account has been reinstated. this took 11 months. New scenario. Online booking was made and the guest provided credit card details on the Booking.com platform. Guest arrive and stay over, the morning before the guest depart we receive an email from them stating the bank message for the credit card "DENIED". We show the guest this and guest pays the bill, but write a negative review for our establishment. We ask Booking.com to remove the review, again with supportive email attached and even though the bad review is due to the fact that Booking.com sent us the clear email that the bank denied the guests credit card they refuse to remove the review. This is the kind of partnership Booking.com offer. Be aware before you partner with this online booking platform