Informatica Full Stack Developer interview questions

Applied through LinkedIn. First was a call with HR which I was asked what my salary expectations are. They told me they would be there for me throughout the process to answer any questions I have. This was the last time I heard from them despite emailing several questions before and after the interview. An interview was organized several days after the HR call. The interview consisted of 4 interviewee's and several rounds of technical, behavioral, theory based questions. They were very nice and friendly, but it would have been a huge help to know the scope of the interview beforehand. They told me I would hear from the recruiter whether I was offered the position by the end of the week, most probably the next day or two. I haven't heard anything from the recruiter despite following up with 2-3 emails. At this stage it's been about a month since the interview. Very unprofessional, rude, and discouraging.