@Jenny1132I would tell these guests that they should pursue whatever options they feel they need to, but that you are unable to provide them with the information they are seeking at this time, and that you will not respond to their intimidation further.
You owe them no explanations whatsoever.
The below images are what they saw when they booked, and they agreed to them (one is for a request, and one is for an instant book. In both cases the cancellation policies are right in front of them. Maybe it would help if you could include these in your final reply. Your policy may differ, but the info is very clear for them when they book, as to when they need to cancel for a refund.
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