Amazon Sr. Software Engineer interview questions

This is the most disorganized interview process I've ever been part of. I've given up after 3 weeks of trying to make it work. First, their online application system is useless; your application will be quietly marked as "dismissed" without explanation and you'll never know about it. Finally a recruiter contacted me instead. They started passing me around from one recruiter to another to the point where I didn't know who my point of contact was. When they finally scheduled an interview, I logged on but the interviewer never showed up. Then they e-mailed me in the middle of the night apologizing, and re-scheduled the interview for 9am the next morning -- an e-mail which I of course didn't see until I woke up.

Recruiter contact me, schedule an OA, the OA question are easy, then schedule a telephone coding interview, the question is very easy, but not hire, not give any feedback, contact recruiter, recruiter response it was final decisiona