I booked a room that was insta-book, and my host sent me a message saying that she was away on military training, so I had to confirm with another party. I texted the number she provided, and the guy said that I have some wrong information because he doesn't have an AirBnB. I sent her further messages to try to resolve the situation but she has been unresponsive for days. I want to cancel my reservation with this host, but as it stands she's going to get a service fee of some 38$ which I think is wrong. What can I do about it?