Only one phone interview, the project manager called directly. It seemed that each team recruited their own interns, and there was no formal interviews. it was all about resume and past experience. And the manager were trying to figure whether you could work well in a team. And they cared about your immediate availability. Probably you should give positive feedback and convince them that you are a person who is willing to contribute.

Campus interview at a business school in India. Two rounds of interview. Initial one with a manager - more technical, the other with a Managing Director - HR + little technical