Cognizant Senior Developer interview questions

Waste of time...very unprofessional...interviewed in open bay. They wasted much of time...I reached CTS manyata Bangalore at 11 am....waited till 4 PM to have my first round.....It's okay to wait..but they should have courtesy to inform about waiting time..I had to ask them for lunch..then they told us to go for lunch...interviewer was not in a mood to take interview..he asked me irrelevant questions...then about the documents that I have created in my project😐....overall a bad experience.