Proofpoint interview questions

Did a two hour coding project which was cool, for the initial job screening. It involved creating a app in C# and seemed to go pretty well. However the ghosted me after doing it, followed up on three separate occasions no response.

Very long screening process where they have you talk to the hiring manager, her boss, someone who was in the role and counterpart. Very short interviews with no meaningful questions. After all this was told they were moving on to people more closely aligned to their needs. Very frustrating experience especially because this was a role I could have done with my eyes closed. The least they could do is share why they did not think I was a good fit.