UP Education Network interview questions

I was contacted for a brief phone interview which was done by someone in Human Resources. The individual was pleasant. I was told that I should hear back, regardless of if they intended to give me another interview yet I did not hear back at all.

Super long interview process. The actual interviews are pleasant, but the follow-up and communication in between are super frustrating. They say they loved your interview, please wait for the next round notice. Two weeks later, still no confirmed date for the next round. Even after the final round, they kept expressing their excitement about having me. 2-3 weeks later, they rejected me without even giving me a reason. I really love what they do for the kids and was willing to hold off my other offers to wait for their answer. Very disappointing.