Amazon Cloud Support Engineer interview questions

I was informed about the amazon recruitment by my friend. I applied for a position of cloud support engineer and i received an email for an online assessment which i passed and i am preparing for a phone screen interview

Attended in Amazon Development Centre,Bangalore.It was weekend as per my expectation many people were there. HR explained that there will be written round post for different DBA skills (oracle/myssql/postgresql separate papers) that who clears will be send to F2F interview. It was long hectic process, just for written round of 1 hr and paper check it took 3 hrs. By 1:00 they declared the name of people who havent cleared. I cleared the written test Also they mentioned that they will arrange the lunch soon. After waiting for long 2 hr finally lunch was served at 2:30 PM which was also little fried rice and gravy. After that i was interviewed at 5:00 PM. Interviewer already has the set of question prepared which he was asking. No question from my area of expertise. I didnt cleared the F2F round. I felt from all the interview process that i should never had come .Just by seeing the brand name i came for interview. Making candidates wait for such a long time without proper food is not good at all. It felt like they are organizing the interview process very first time. Good that i didnt cleared it. Office infrastructure was really good but they dont consider candidates who can be there future employee as human.