I started inquiring with airbnb about a fraudulent...

I started inquiring with airbnb about a fraudulent charge on my credit card 3 weeks ago. (I should note that I do not have an account with airbnb.) I have made 3 phone calls and numerous email inquiries (usually have to wait on the phone for 45 minutes to get through), and have received NO INFORMATION and NO FOLLOW UP. Not a single phone call, not a single email response. The contact center can DO NOTHING but put in a ticket. I initiated a formal process of dispute with my credit card. Guess what---they are waiting on a response from airbnb...