Tech Mahindra Front End Developer interview questions

three rounds of interviews and discussed with previous projects and interviewed about the angular and bootstrap and present using technologies interviewed about the angular and bootstrap and present using technologies

It was weekend drive. The whole process took around 3 hrs. They confirmed that I was selected and should be having one client round. 1 week went by and no update and one day the manager called and asked if I can take client round next day. I took the interview , all went well and interviewer confirmed that manager will get back for next process but again no response. No process in place, no courtesy to inform or update.