Integrity Knowledge Services (India) interview questions

I submitted the resume and waited for a few minutes. A typing test was done, which went well leading up to the final interview. just after 2-3 personal questions, the interviewer told me to sit outside, After sitting for almost 2 hours, someone from their team came and told me I was rejected, I asked for the reason, which obviously they didn't tell me. I have been rejected before too, but I don't know what this was.