Atreo interview questions

I only went through the first step of the hiring process - personal interview, face to face. The interview felt good, the interviewer was very nice and told me she wants the interview to be rolling as a regular open conversation, and so it felt. Made it lighter, more comfortable and less stressful. After this interview I got the negative answer by email. I asked for a detailed feedback - didn't get one. I asked for it again, sent an email as a reminder about a week later - still nothing. It made me angry on this company and made the process very negative for me.