Cognizant Associate Programmer interview questions

I apply through AMCAT. It takes around 3+ weeks after completing my first round ie. AMCAT online exam (it contains questions from spring, hibernate, struts, JSP/Servlet and two logical programs). I interviewed in Cognizant Kandanchavadi, chennai. I have been waiting from 10.00 AM, they have called me around 2.30 PM for the first round. very worst interview process I have ever attend. They have selected almost everyone comes for the interview. They said we will get the offer within two weeks. But still now didn't get any offer. When try to call the HR, they didn't responds to oure queries.