Genpact — Recruiters doesn't pickup the phone call

I have tried to call there recruiters regarding a job posting and they did not pickup the call I have called about 7 recruiters Patanjli, Urvashi, Akriti and Ria but non of them ever pickup the phone call it's so rude, in this vertical word how can somone apply for the job, and moreover you have posted job on job boards so somone should be there to attend the candidate I know in India there 100 of 1000 of people are applying for the jobs but still one should be there to assist candidates