Booking.com Lacks Direct Customer Support Contact for Unusable Room Refund

I made a booking via Booking.com for Super Hotel in Coimbatore and checked in on 21 August. When I entered the room, I found that the bed was broken and the room condition was not acceptable for a proper stay. I informed the hotel about the broken bed, and the OYO partner there initiated an email for a refund and advised me to contact Booking.com. However, I do not have any direct contact number or clear way to reach Booking.com support to complete this refund process. I kindly request a full refund for this stay, as the room was not in a usable condition and the bed was broken despite me booking in good faith through Booking.com. I would like this issue to be resolved as soon as possible.