I would just say its an unprofessional and worst c...

I would just say its an unprofessional and worst company to work with. I had 4 round of interview and at the time of salary discussion they took all my documents and immediately rejected me mentioning some unknown reason. They show they are the best in the world but are not when HR needs you they will call at 12 at night but when they don't they will never pick your phone.