Booking.com terrible service

I booked online to sleep at Ramsgate Palms 65 and made my full payment in September 2020 for sleeping from the 16 to 18 October 2020. The event I went to was then cancelled and wrote booking.com and Ramsgate Palms 65 to notify them a week before the event. Booking.com has not paid me my refund and also did not pay Ramsgate Palms 65 until today. They claimed to have received my cancellation request on 5 October 2020 for reservation *** but they keep sending me email of how was my stay and ignore my refund emails.