Pratt & Whitney Manager interview questions

Was contacted directly by the hiring manager. Good start. Had a strong (phone) conversation and they said they'd get back to me after they interviewed a few more candidates. Within a week, HR contacted me and said the hiring manager wanted to bring me in for a panel interview. They gave me some dates and I verified my availability. I reached out a week later after hearing nothing ... Well, here we are 4 weeks later. With SIX unanswered emails/vmails to HR and the hiring manager. Unacceptable and unprofessional. I'm glad I learned this now before going to work for such an organization.