I had a first round interview. I left with a positive feeling, and I was waiting for feedback until the agreed time (7days). No feedback received, so I contacted the interviewer 3 times to ask about the status of my application, but she get back to me after 4 weeks for the first time. It was really unprofessional. In addition, at the end of the interview, I asked basic questions about the company and ways of career development, the recruiter showed visible anxiety with his body language and stuttered while giving the answer "I don't know". very unprofessional and naive. Waste of time.