I found the recruiter to be disrespectful as they never showed up to the agreed upon interview, I waited on for 15-20 minutes but they never showed up. I never got an phone call, email or text saying they had run into some difficulty or something had happened in their personal life or offering to reschedule.

Schedule a skype meeting for interview, introduce their service as agent, and ask several work-related questions, then walk through the resume, ask about the compensation expectation, etc., which lasts about 30 mins.