I checked into an Air BnB that had not been cleaned (to include dirty underwear left on the bathroom floor), had been falsely advertised and had undeclared damages. I notified the host. After my stay, the host attempted to charge me for one of the many pre-existing damages. To make matters more difficult, she blocked my ability to communicate with her via chat. I spent hours escalating to Air BnB off-shore support personnel, who continuously closed my tickets and provided no helpful assistance. How can I get a senior, US-based customer service manager on the phone?