IBM Entry Level Hardware Engineer interview questions

1. Went through campus recruiting 2. Campus recruiter passed my resume to different managers (appeared the person who visits the campus does not have any influence in hiring decision(s)) 3. After 90 days, one manager contacted me for a phone screen 4. Technical interviews with 2 different senior level hardware engineers 5. After 2 months, Invited for onsite interview (9:00am ~ 5:00pm). I had to go around the facilities, the employers showed what they were doing. Nothing technical questions despite I prepared so much...

Went through 3 rounds of interviews. 1 on phone, 2 on-site. All of them went very well. No response after the 3rd interview. I tried calling and emailing and the hiring manager and the manager of the Business Unit ducked/ignored my calls and emails for 12 weeks, before asking for more info. After supplying them with info (and getting my hopes up) I was notified that the position was closed. A huge waste of my time, very unprofessional and unethical.