Innovative Micro Technology Process Development Engineer interview questions

No scheduling in advance. Interviewer is vice president for process development. He asked about technical questions related to my resume. He decided to schedule an on-site interview, but we had to postpone it because of my graduation paperwork. After a month later, both him and Human resources ignore my calls and e-mails. No rejection letter or explanation.

Sudden call, no email in advance. Interviewer is vice president and asked about technical questions related to the resume. Background check includes citizenship or visa status, desired salary, relocation, available date, references etc.