Cognizant Technology Solutions — delaying the joining date even after submitting all the document in portal

Address: Chennai, Tamil Nadu, 600094

I am rajeshwar patel with candidate id :[protected]. I suppose to be join on 20th july 2017. But due to on boarding pass not generated its postponed to 21th july 2017. But again its not generated and now its postponed to 25th july 2017.
Regarding the issue i continuously get in touch with my recruiter but neither he resolve it or not helping also just delaying the date. Even i was try to calling the given numbers in one cognizant portal but no response
Even i was trying to contact neha form tagss-candidate help-desk and drop a mail to [protected]@cognizant.com but no response from there side.

Its very irresponsible company for new joinee. Before join itself these many problems. Imagine after join what will happen to our future.