CyberArk Technical Support Engineer interview questions

I started with an initial internal recruiter zoom call and discussed the role. This was followed by a list of high level technical questions to answer. The recruiter said management was impressed with my answers and wanted to schedule a management interview with me, and that I'd receive a calendar invite soon. I never received the invite. Upon emailing the recruiter, I received an email bounce-back stating that they were no longer with the company and to email a separate HR email address. Unfortunately the mentioned HR email address was INTERNAL ONLY. After investing so much time in this interview process I was pretty disappointed. I reached out to the CyberArk company account on Linkedin and explained the situation. They apologized and stated that someone would get back to me asap. Nobody ever got back to me. I messaged the CyberArk account again and was completely ghosted. They never responded. This is very unprofessional and a waste of my time. This HR/recruiting department should be embarrassed.