What can I do in a situation if international students are forced work illegally?

Hello sir I am a student of Bsc paramedical technology Radiography. I'm Asked to work forcefully with almost no lecture in college if i remain absent or refuse to work they threat me like they will remove my admission or fail in practical exams or mark me absent even if I'm present. They ask all the students to work as a technician and the technician almost never work.