Questions posées lors d’un entretien d’embauche pour Senior Software Engineer - Java Developer chez Tech Mahindra

I have been referred by someone from tech mahindra and after that i have telephonic round normally they ask all about experience and skillsets and technical round 1 within 1 week I having an interview and I get feedback next day as rejected

I completed 2 rounds of interview and got selected but this company will not respond properly to the mails or calls and won’t give any update. Finally they are saying the job is on hold. It’s unethical totally.