Priory Solutions interview questions

The interview went great, or so I thought. I had an excellent rapport with the person I spoke to who took the questions he was asking very seriously. He was adamant that he would calling me back and told me it would be the Monday or Tuesday of the following week, and no one ever called back. As always, I sent a simple standard follow up "thank you" email directly to the person I interviewed with the same day. And, even though the person was supposed to let me know if I had made it to the second round of the "face to face" interview process, there was literally never any response to the email I had previously sent, or a phone call following up to let me know where I stood either way. To not receive any response whatsoever was unprofessional and in poor taste in my opinion.