Amazon Operations Manager interview questions

I would rate it 3/10 given the standards of this organisation. First two rounds were on the same day, third round on the second day. Then they went missing for three weeks, no information. Before the fourth (and final round) I got another opportunity converted and could have gotten my joining date anytime but I wanted to have a closure from Amazon so informed the HR. She said please attend the final round and then decide. I did, it went just as well. No information again, blackhole. After chasing HR for several days on call/email finally got to know that I didn't make it and this information was so handy that it didn't take her 1 second to answer on the call even when she didn't know at the beginning who she was talking to, had no time to look through my records. She knows the result but formal communication has not been shared. This is where the HR play their game and I think its pretty normal for them, not for candidate though. Didn't expect this from Amazon.