Cognizant — NO joining provided yet

I am selected in cognizant in Oct 2019 and still not received my doj and its been more than 1.5 years It is not professional to let a candidate wait for such long time .We are in so much pressure .I heartily request you to please please provide Doj as our skills and experience is being wasted Also i tried reaching all your email address and contact no but got no reply from them .Its been depressing i am suffering from insomnia at least a mail of hope could help me