Cognizant Automation Engineer interview questions

Interview has been scheduled at 9 am. I have reached at 10am.. But they started the interview process for automation at 3pm. I was shortlisted and had HR discussion at 6.30pm. Whole day gone. I have been told that I'll get the offer letter within 2 weeks but it doesn't happen. But the person who attended the interview with me got a call from HR. I have not been given with any HR contact number than the email address.. I kept on sending her mails, no reply from her. My personal request is, whatever the status is please reply back to the candidate.

I had attended for selenium automation walkin. It has 2 rounds of technical interviews, one for telephone other is teleconference. Asked about selenium, and oops concepts. Then HR said will be having one more round at client. So after waiting 4 weeks I got call from cts HR to attend client round. Went to jpmc given interviews.