Cognizant Sr. QA Engineer interview questions

I cleared 1st technical then HR round. Then they told me another round of interview is required. I gave that and cleared it. Then, I got the mail that I have cleared all the rounds and we will get the back with salary discussion and send you offer letter. Now this has become history. No offer letter , HR not receiving calls and getting random cognizant mails for drive and other interviews to attend, got referred by someone from cognizant. Do not waste our time and panels time. Moreover they said they will give 20% hike on my CTC for 9.6 years experience into Automation QA which I didn't like it still I said Ok thinking let's have this offer letter at least.

I was first contacted by HR for a discussion, after there was schedules a technical interview with them that was a very pleasant experience. They were quite thorough and asked me about everything from basic knowledge to a bit more in depth questions about different types of situations as well as a practical exam. After that I was invited a second time to attend a meeting with someone from upper management for the salary offer