UnitedHealth Group Senior Software Developer interview questions

My interview got scheduled from Recruitment agency. Interview took 10 mins. I reached there at 10:30 in morning as scheduled. 1 girl came and took me to interview room. She asked me questions like 1 year experienced guy Like Inner join, difference between Stored Procedure and Functions, Difference between Abstract class and Interface. She never discussed about my projects or what type of work i do , I gave answers very diligently because i thought that she will start from basic and will raise the level slowly and i can say that i never got stuck with any question as they are basic questions. After there 3-4 questions she said "You can leave for the day." I knew that i was not selected. I came out of the company , i was shocked. I called the recruitment agency again but they said they will discuss with panel and will come back and they never came back. I found it very unprofessional of them, if you doesn't like my profile you should not call me for an interview. Like this they have wasted their and mine time . That's not what i was expecting from XL Healthcare.

I have got call through Magna Infotech pvt ltd and scheduled phase to phase interview at their location. They have taken 4 rounds in which 3 are face to face and one is through telephonic round.Interview results are declared immediately and got offer too. Interview process was very speed.