PwC Software Developer interview questions

One of the worst interview I had ever faced. I have reached the interview location on-time and then done with the first round(written test) and they have asked us to wait for some time for the results then they called few ppl who were not qualified in the 1st round. My name was not there in the disqualified list. They have waited me for 5 hrs and finally said I didn't cleared the first round. The reason for delay I got from HR was so ridiculous.

first was apti round around 60 out of 200 were selected . then the second round was gd where 30 were selected. the final was interview (tech + hr). I was the last one to be interviewed and the panel was not interested in it. so never be the last one to be interviewed