Nothing

I booked this last minute. The price was advertised in pesos yet when you receive the confirmation, the price is in USD. This is highly confusing on the website. I immediately contacted the hotel to request a cancellation as it was double what I was anticipating to pay. They refused to cancel the reservation. A simple bit of customer service. I ended up staying elsewhere as I had booked another reservation while waiting for their reply. They stopped responding after I requested a cancellation for several hours. Very disappointed with Booking.com in this case. As they were not able to resolve this after requesting additional help.