Tech Mahindra Sr Software Engineer interview questions

Intially there were four rounds with the client and then Tech Mahindra called for the final HR round in their BLR office. The HR was very unprofessional, used abusive language, did not converse in English , was speaking in a regional language, down rated my previous product companies, mocked me for a while, asked very very personal information about me. After 30 mins, when I burst out, he apologized. Then he started putting down Tech M's name. Then he started revealing the personal info and pay package of an existing employee. Finally he released the offer to me. Very surprised to see such unprofessional, uncivilised behavior from the HR recruiter of a reputed organization like Tech M.