VSC Fire & Security interview questions

Sent in an application. Reached out to me for an interview. I applied directly on the website. The morning of the interview, I received an email cancelling the meeting with no message attached and no reason. I emailed trying to reschedule, no reply. I tried to call the phone listed by the "Program Manager", No answer, left a voicemail, I tried to call again, received a "this number is not available". I called on a different number, and it was ringing. Extremely unprofessional. Never in my years of interviewing has a national company ghosted and blocked a interviewee. Even if they found the select candidate, please give decency and respect to others time. Feels like a dodged a bullet.