Blacktip interview questions

Initial 1 hour interview. Scheduled for a 4 hour on site interview but asked to have another call with the owner before coming in. Spoke with the owner for 45 mins the day before. The next day I spent 1.5 hours at the office being asked questions. After speaking to 3 people (there are only 6 employees - including the owner and his wife / daughter) the owner came in and Abruptly asked me to leave because it wouldn’t be a cultural fit. When I asked for additional feedback I was told my answers were circumventing their questions and that if I don’t know something I should just say so, rather than speaking to the topic and my experience with it.