[Resolved]  Cognizant — Blacklisted

i attended interview with cognizant and got selected. They offered me time of 1 month to join. In between 1 month they told me that they are not going to process Green card. So after 1 month I decided not to join. So they block listed me from the company. And also iam not getting job in any big it Indian companies since they have network (internal website to track).since 3 years I don’t have proper job, Pl suggest me what to do