Host will only refund me if another guest rebooks

The Airbnb I booked was disgusting. Mold in the bathroom, bugs, dirty bedding, hair everywhere. (I took pictures and videos as evidence) We couldn’t stay and had to find a hotel. When I talked to the host, she said she’d only refund me if another guest rebooks over my reservation. I reported to Airbnb already but is this even allowed?? Has anyone had a similar experience?