@Steve3110 Can you explain what you mean by "the one I booked in error was never even accepted but I still paid a fee"?
Guests don't get charged anything for non-confirmed bookings. If you Instant Book a place, that means that the host is not given an opportunity to accept or decline the booking- your credit card is charged and the booking is confirmed automatically when you place the booking. There is no acceptance procedure- the moment you hit "Book now" your booking is accepted.
If you send a booking request instead, the host has 24 hours to either accept or decline the booking. If they choose, they can just click on accept right away and you are then charged. Most hosts would send a greeting message to the guest at the same time they clicked on "accept", or ask you some questions before accepting. Once you submit a booking request, you have no control over the host clicking on accept and being charged. You can, however, withdraw a request if the host hasn't yet accepted it.
If you simply want to ask a host some questions first, without committing to a booking, you use the "Contact Host"button on the listing. This is called an Inquiry. The host has the choice to pre-approve you, decline, or simply message back answering your questions, which is what the majority of hosts do. Even if a host pre-approves you on an Inquiry, you won't be charged. You have take another step to book.
Unless there was some tech glitch, you would not have been charged anything for a non-confirmed booking.
I totally sympathize with you, I'm just trying to explain to you how it works. It's absurd that a guest should be charged if it was an error that they corrected almost immediately. There should be some grace period afforded and the wording about being charged for both bookings if you fail to cancel one first, while it is there for guests to read, which it seems you misssed seeing or reading, is in pretty small print. It should be made more prominent.
Have you talked the Airbnb customer service? It's possible that if you are persistent but polite, they may refund you, but it's a crap shoot.