@Pauline723 Someone who stays for 9 months is not a guest. They are a tenant under the eyes of the law after 30 days. Airbnb is not an appropriate way to rent to a tenant. You were a landlord in this situation, not a host, and should have used other means to obtain a tenant, using a proper lease, requiring references and a security deposit. You also needed private rental insurance.
And as Emiel pointed out, not checking on your property in 9 months was a huge mistake.
I realize that is water under the bridge now, but something to keep in mind for the future.
All you can do now is be persistent about getting your claim responded to. These things take a long time with Airbnb.