First Coast Security Supervisor interview questions

They approached me after discovering my résumé online. I was emailed then called. I was told they were hiring numerous positions for supervisors and managers for a brand new contract in Ohio. They seemed to want me right in but I asked a few questions then told them to give me 24 hours so that I may have a night to think on it, as I am already employed. The next afternoon I called, was put on hold, then told they were unavailable and sent me to voicemail. I left a voicemail and two hours later I sent an email after getting no callback. The email was immediately replied to stating all supervisor positions were filled. How multiple positions were filled in under 24 hours on a new contract tells me they are yet another security company who wants warm bodies and not qualified people. I found this unprofessional especially in how they approached me first, not by me applying.