Ardagh Group Maintenance Supervisor interview questions

Found job online through corporate web site. Sent in resume. received phone call to schedule phone interview. Did phone interview then was asked to come in for a personal interview. That call came about 1 week later. Went to interview, felt good about it and took a tour of plant. Was to interview with HR Manager. Had to schedule for another day, which we did that day. Got a call the next day it had to be postponed. After 1 call and several E mails almost a month after the interview, received an email that they had offered job to another candidate.