Gainsight Technical Writer interview questions

Interview had a 4 round. 1st technical, 2nd written, 3rd behavioural and final round with VP. I have completed all the rounds of interviews and mine last round was on 25th November. But till now I don't have any update about my interview and the worst thing is HR, they don't bother to response or pick your call. Applicant have all right to get response even they not got selected.