@Kyle319 I would contact Airbnb again and explain what is happening. Ask them to take a look at all these messages, cancellations and requests for refunds and if you can, screen shot the emails as well and send to them. Tell them you think this is a group of people related to the first guest who cancelled who are making a concerted effort to harrass you. Point out to Airbnb that you've had to change your policy to strict because of this, which you really didn't want to do, but that you can't have these people blocking your calendar with reservations they are just intending to cancel, as they are preventing legitimate guests from booking. Ask them to please look into the original account holder and let him know that this behavior isn't acceptable and if it continues, his account will be suspended. Stay polite and reasonable and firm with CS.