@Conor133
I suspect we'll begin to see more of this as the "get free stays on Airbnb" blogs start to add cameras to the list of things you can claim to get a refund; Just affix something resembling a camera to a wall, take a photo, and bingo! claim a refund.
But as @Alicia753 pointed out, you'll need to provide proof. So be sure to have ready photos available showing no such camera devices and be sure to indicate that in several places in your listing description.
Also demand that the guest to provide the location and lots of up-close photos of the alleged camera(s). Obviously, if they don't do it, then there's good reason to doubt the claim. But if they do provide photos, look for signs that it's not actually a camera, and/or that it's not in your listing (e.g., the background/wall doesn't match where they claim it to be, or that it's haphazardly affixed and not connected to anything ...no power cable, no lights, no antenna...).
In outsourced support, often the easiest thing for some support agents is to just press a button and give the guest their refund (minus Airbnb commission of course), not bothering to do any extensive investigation. And then it's off their screen, and counts for another quick and successful "resolution" by that support agent, which they often will receive rewards for. But don't just lie down. Make them work for it. Be adamant that there's no cameras, and make them prove the guest's claim!
Good luck. Don't give up.
