AppsFlyer Support Engineer interview questions

I had heard good things about Appsflyer, until this interview.... The interviewer was extremely unprofessional and unprepared. He asked unrelated questions about the position I had applied to and it was also obvious that he hadn't even looked at my one page CV before the interview. (asking me like, "are you still working at (your previous) company ?" - whereas it was stated in my CV that I had left the company almost a year ago) I definitely think they shouldn't let him to attend interviews alone, especially in a tech city like Berlin. Very bad reputation for Appsflyer