The hiring manager calls and says that when we got your resume it was perfect as we need someone with your background. But I need someone technical. I did tell him I have technical experience in networking (which is what he was looking for) but it’s been very long time and I am out of touch. So he goes like so if I give you a day or two would that be enough to go over the concepts and then I call you again and interview you. I said Yes. He said I will call you next day. I spent who day and night going over all the concepts. The time of the interview comes and he never calls. I called him to which I was told “I cannot talk right now”. An hour passes he calls and says I was stuck in important meeting. And he cannot call me tomorrow as he is on vacation so it has to be Next week. He said he will schedule interview and send me invite via email. Guess what happened next? No invite and no reply for the emails. I sent him 3 or 4 emails asking if he is still interested in interviewing. Nothing!!! Until after few weeks I get automated email of “sorry we will not consider you for the role”. The amount of unprofessionalism I observed was mind boggling.