Same thing happen to me. cleared 4 rounds(1 F2F interview + 1 Telephonic Interview + 1 Hiring manager Round + 1 HR round) After both HR and manager round : both told me you selected asked me to fwd my payslips. negotiations also done on CTC. after that no OFFER LETTER as promised and no response from HR(Cryswel) and Talent Acquisition(Ravi Teja)