Amazon Customer Services Associate interview questions

I applied online, then received an email saying that I had been selected for an interview and was able to select from a choice of times when I was available. I was not available for any of the options because I was in school and explained this via email to HR. They were very understanding and said they could work around my schedule. The interview was over the phone and lasted about 15-20 minutes.

First they will take GD round then shortlisted candidate is go to next round that is PI/HR round, this round held on next day due to huge no. of candidate are applied for that, then they will give the offer letter.....