Hello, i had to cancel a reservation and the guest is stating Airbnb retained $50 fee from his refund. He is demanding I pay him the $50. He did not provide proof of the $50 fee. Policy 9.3 states if a host cancels a reservation the guest shall recieve a full refund, and host may be assesed a fee. I did not get assesed a host fee as thisxwas my first time having to cancel since becomming a host over a year ago. Anyone know anything about guests being assessed cancellation fees due to host cancellation? Thank you...Irma