you have to see whether ragging is harming your friend.
If Yes then help him or her anyhow.
Ask other seniors for help
talk to faculty
stay in groups
inform college administration
Actions to be taken :
1. Inform parents- Don't think that its not cool to make them worry.
2. Complaint in college.
In very serious cases when college is failing solving the issue, you should go to media.
not panic/get cold feet/cry wolf if a senior attempts to talk to you
and simply asks you your name or department or trivial stuff like that.
Asking someone's name is part of a standard protocol followed in
civilized societies around the world.
Just tell him or her to find out about the anti-ragging committee of your institute and note their emergency numbers. If you are availing hostel facilities there is a chance that you will be ragged at night.
Therefore, note down a number
that can be reached even after sundown. In order to be prepared, save the numbers of the nearest hospital,
ambulance service and hostel warden. However, while you go information
hunting avoid asking any random senior you meet for it. Remember, many
humiliations could have been avoided had the right question not been
asked of the wrong senior.