Applied online, received an email to schedule the interview. Arrived the office, everyone is doing their own things, no one was acknowledging my presence and no one was helping me. Finally someone passed by and helped me. But I was still left hanging for another 15 mins until someone finally came get me to the interview room. She asked some questions and ask me if I have any questions. I was in and out about in and out in 10 mins, and then she said they usually do 2 round of interview, and ask me to send an follow up email with her, I was lost and confused as I thought the HR is the one who does the follow up?