Perficient IT Consultant/Project Manager interview questions

Had 6 interviews, 3 with Perficient and 3 with the client all about 1 hr each. It felt very promising as they kept asking for interviews... All the interviews, went great and I got good feedback on my skills and interview performance. Perficient ghosted me and would not return my three follow ups. Very unprofessional and a waste of my time after 6 hours in interviewing....