HCLTech Senior Software Developer interview questions

I have attended two technical rounds and 1 h r round, and interview went well , first round interviewer covered depth java interview questions and programs on threads ,oops ,collections, exception handling

Interview process was smooth, until the HR ruined it as there was lack of communication. HR does not answer any kind of communication calls or mails. I did not even get a call on joining date! overall experience was good but HR ruined it for me.