Hotels.com Charged Me for Rooms That Were Unavailable and Did Not Refund Me

I booked two rooms using the Hotels.com app and completed the payment online. Approximately thirty minutes later, I got a call from the hotel letting me know that the rooms advertised as available on the app were, in fact, not available. I found myself in a tough spot, as I neither received a refund nor could I stay at the hotel I had reserved. Unfortunately, I ended up having to pay again to stay at another hotel. This experience has been quite frustrating, and I anticipated a higher standard from a platform such as Hotels.com. I would like to request a refund for my payment and seek a solution to avoid similar problems moving forward.