First round was virtual Second round was mentioned in person later it was like virtual in their office Later mentioned client round but only get to hear that client is not responding and the interview was never scheduled

They first told it will be a 6 round interview process. HR will bug you either via Linkedin or email for scheduling the interview. Once the interview is scheduled they will just postpone things with one reason or another. Later if you contact them for updates they will ghost you until they find themselves suitable to answer your question which is like 4+ weeks later just to to tell result.