Presumably you've looked on Airbnb to check that there is a listing up there for your previous property? Who does it say the host is for the property?
If you have deactivated your listing, in my opinion, it's much more likely a scammer is using your old address - rather than this being Airbnb listing @Sally949 and is listing on third party websites. Have the new owners got a screen shot or photo of the false listing from those turning up?
If this is the case you will need to report the false listing on platforms that is listing on. The current owners should do the same.