Amazon Customer Service Associate interview questions

The hiring team came to our college as part of campus recruitment.Since it was a bpo job most of the students wer not interested.So they asked only the interested ones to sit. The process started with a 5 minute talk on any subject that we liked and few of us wer selected. The next process was a grammar test followed by a voice test and few wer eliminated. The next one was direct interview and I thought it went well. But I talked about taking mba when they asked about future plans. So that's wher it went wrong i think. They wanted ppl who wud stick with them for a long time and not ppl who would prefer to go for higher studies.