Complaint Review: booking.com

I made a booking for a hotel called Lyndon B&B on Jan 12th, 2023. While I was making the booking, the purchase screens showed that the hotel was REFUNDABLE, which is why I decided to book it. Right as I completed the booking, the status changed from REFUNDABLE to PARTIALLY REFUNDABLE. By the time I received the email, the status had changed to NON-REFUNDABLE. 

I have repeatedly requested a refund to this reservation but Booking keeps saying there is nothing they can do and I have to reach out to the hotel directly. This sounds quite unethical and incorrect to me since I made the payment to booking.com on their platform, and my contract is with booking.com. In addition, the hotel (Lyndon B&B, phone number: +44 7448 765516) only uses a mobile number which is always switched off when I call and they never returned any of my phone calls. 

I am disappointed that booking.com would allow this hotel to operate on their platform and not take responsibility for what appears to be unethical activity on their website by a partner hotel. I would like my $570 to be refunded and I would like the opportunity to leave a review for this hotel on Booking.com to warn other customers who may fall into this trap.