I am working here from 2 years they refused to release me after confirmatio

Bro

Option 1: Stop doing work

Option 2: Get a Offer, throw the Resignation at your Manager and go out.

I vote for 2...

Forward it to HR

Your question is your answer 😎

There is no one in tcs that can question these kind of actions so everything is allowed
Better start searching outside and move on it will be very hard by managing these people and at the same time handling the frustrations by seeing the rejection offers but it will take time it's sure will be worth than what here it is.

Reach out to your higher officials but it is not worth
Stay on the good side of the managers