Cognizant interview questions

I am writing to share some feedback regarding my recent interview. I waited online for about 40 minutes, but the interviewer never joined the call. I followed up via email to check what happened, but unfortunately, I haven't received any response. Honestly, this experience was quite disappointing. It feels unprofessional to be ghosted after I set aside my time for the meeting, and it has really changed my perspective on your hiring process. I hope you can improve this communication for future candidates.