Infosys Software Engineer interview questions

They call on you on the phone first to perform a one on one phone interview, after which if you pass, they will arrange a first around interview with a HR person and if you past that, you will need to sit through a technical interview.

I was given interview opportunity without actually applying for. No job description given after trying to contact them for three times. Three different people called me to make interview confirmation. At the interview, gave me time to talk about myself for 20 min. and they seemed very satisfied. However, they asked for something I already told them within those 20 min. and I had to repeat myself. They sent no-offer email within a couple of days. It looked like they wanted cheap resource rather then top skilled people.