Homeville Consulting interview questions

Call for in office interview in Lower Parel Mumbai. Takes 2 technical round. Select you and proceed with further process on email. Suddenly calls and says we want to take another round for double confirmation. Takes the new round. Till you give a wrong answer you be questioned deeper. and than based on 1 wrong answer in the whole 40-50 mins of interview you get a call that says you didnt met the expectations.