That is so upsetting, I would be livid!! Airbnb is really letting hosts down and I wish I could say this was new but it isn’t. I had a guest book my home for 6 nights (all of this is pre-Covid) and on the day of arrival I provided additional info as usual, never heard back from the guest which is normal sometimes so I didn’t think anything of it, I took it as they read, understood, and were fine (they seemed like respectful independent guests). 4 days into the reservation I get a support message saying the guests complained of my property smelling like smoke and I should remedy the situation. I reached out to the guest extremely confused as my property is smoke free and thankfully hadn’t had any issues with that at the time. Still no response from the guest, so I physically go to my property to find they hadn't stayed from how it appeared. I contacted Airbnb and they said ‘oh we actually refunded them on the 1st day, and they left‘ ..and they tried to penalize me by saying they would not unblock my listing for the remainder 2 days. I asked what proof was furnished for these measures and they said they didn’t see anything submitted. I was able to have my calendar reopened and fought for weeks to have the reservation amount credited back but I never was able to get clarification from Airbnb why I wasn’t informed day 1, why my side was never considered, and how a guest could just make an open statement and be fully refunded without documentation like we have to do for everything. It’s so frustrating how Airbnb handles matters.