Cognizant — Regarding rejecting my offer

Hi, My name is Mohsin Usmani. My email id is [protected]@gmail.com. I got a offer from cognizant on 29/01/2021.
After completing all BGV process and prejoining forms I gets delayed in joining which was on 17/01/2022 because my BGV process was not completed.
Once my BGV process gets completed they changed my joining date to 24/01/2022 but I again didn't receive my onboarding pass and on 25/01/2022 they rejected my offer by saying that there is some issue with your BGV process.
If there was issue in my BGV process then how it gets completed once.
I have waited for 1 month for onboarding and also rejected offer from IIT Kanpur to accept this offer.
If you can't give jobs please don't play with the career of candidates.
Now what I will do I have lost two prestigious jobs due this. Cognizant has destroyed my career.