I'm experiencing something similar with my reservation that occurred during 7-10 October, he has pressured me into giving him a 200$ deposit for "security". During the checkout he didnt return the money, saying that it will be for cleaning fees, because I have a dog with me. Which he already knows and his listing is listed as pet friendly, now he is threatening me to come to my university stating that he will come to take more money, and has made multiple hostile comments. I've contacted Airbnb support multiple times past 3 days and they haven't replied once.
Awful service, I didnt expect this from an Airbnb host or Airbnb customer service. This host shouldn't be allowed to list anything on Airbnb!