NTT DATA Windows Server Administrator interview questions

My resume was shortlisted from job boards, they contacted and scheduled a telephonic technical interview, post to clearance of the first round i was asked to drop to their office for next round, there again i went through 2 more rounds of technical interview. Finally I was told i have cleared all the round of interview and package discussion was over and they explained me all the roles and responsibilities i will be take post joining and HR will contact me soon. After that they didnt contact me , when i followed up HR told me my resume went on hold but no reason for it. If package was the only reason they should have talked to me