Cognizant Technology Solutions — date of joining not issued

Address: PAN India

It's been more than 10 months now since i received my offer letter but till now no updates on my doj and they are not providing any updates regarding when they are going to issue the doj
It's really frustrating to be idle like i'm after even getting a job.
Their management is the worst and you can't even contact the hr, useless everything there is useless.