JSR Technologies interview questions

They visited in our college for campus placement in 2017 and have selected 11-12 candidates. I'm one of them who has cleared all the rounds including written and interview. I thought that I'll having a job after my completion of education but I was wrong. They didn't send any joining letter to a single selected student. The worst part ever is like I have sent emails also to this  company and they never replied to me. When I have written a google review for this company , They have deleted it from there. I don't understand why this company visit to colleges for campus placement when they don't carry such a status to send joining letters to students. They don't deserve a single star rating. I want to suggest something to this company that maintain your reputation among the freshers and employees.