Hi @Erin8242
unfortunately Airbnb can't do anything in this situation. It's down to the owner of the listing .
I presume you've checked the calendar on the listing to see if bookings are being accepted ?
did removing the listing form part of the contract for your house purchase?
why has the realtor not been in contact with the original owner rather than you having to contact them via the listing .
if the previous owners calendar is open for the listing I can see why you would be concerned. However I think that's unlikely to be the case as they will incur financial penalty for each booking they don't honour.
airbnb isn't doing anything . If what you say is correct and the owner is still taking bookings then it's only them that you could pursue legally or your lawyer too if you asked for it to be taken down as part of your purchase contract .