New Delhi ( CNN ) -- When Priya and Rajendra Kachroo dropped their only son Aman off at medical school , they were both proud and tired . They had to hurry home to care for an ailing elderly parent . `` It was a fast drop , '' recalled Aman 's father , Rajendra Kachroo . Neither had any idea what their son was about to face or they never would have left him there . Aman Kachroo , 19 , a freshman ( or `` fresher , '' as they are called in India ) was about to embark on a torturous six months that would end his life . Aman , along with his new dorm mates , suddenly became the target of `` ragging , '' a form of bullying or hazing usually inflicted by upperclassmen on freshman . Taller than his classmates , handsome and fluent in French , English , and conversational Hindi , Aman was wise beyond his years , his parents say . He had always been able to sort his problems out himself so they could n't imagine him being intimidated . `` There is a whole guilt factor involved in all this that I did n't know [ what was going on ] , '' his mom Priya Kachroo said . `` Really , I could n't understand the size of this problem . '' His parents knew something was going on when Aman came home from Tanda Medical College in Himachal Pradesh State and his hair had been sheered off . His parents said he told them that he was being ragged but not to worry about it because it would end . And it did . For him , it stopped after one night in 2009 when he was woken up by a group of seniors who made him and all his dorm mates stand in a line and then began beating them . Aman later died of a head injury . His father talked to him on the phone in the hours before he died and heard about what happened . Then , abruptly , his son was gone . When relatives went to Aman 's dorm room to pick up his things , they found a note with the word `` ragging '' circled in the middle and words and phrases surrounding it such as , `` Prison like torture , '' `` dictator '' and `` Please talk to us do n't slap us . '' It was Aman 's innermost thoughts about ragging and how terrible it felt . In the hours before he died , he also managed to write a letter of complaint to police describing what happened . His father later read the complaint and was horrified . `` Not easy even to think about it . It 's not easy . It is very difficult , '' Rajendra Kuchroo said tearfully . Aman 's death two years ago triggered national outrage . Four medical students were later convicted of culpable homicide . But his is not the first , nor the last case to end in tragedy in India . Over the years , ragging on college campuses has resulted in dozens of student suicides , students being admitted to mental institutions , or students simply leaving prestigious schools that less than 1 percent of the population can get into . Rajendra Kuchroo says since his son 's case he has seen more than 30 reported suicides allegedly linked to ragging . The Kachroo case did effect some change , in part because Aman 's father decided to dedicate his life to ending the torturous behavior in schools . Now , some campuses enforce a zero tolerance policy on ragging . And Aman 's father took the case to the country 's Supreme Court and managed to get an order setting up parameters on ways to prevent ragging . Now , two years later , inside a bright blue- and orange-colored room , a half-dozen young people are chatting away on phone headsets . But it 's not a typical Indian call center , apparent with the initial phone greeting : . `` You have reached the Anti-Ragging Helpline , '' a young lady chirps . The helpline was just one part of Rajendra Kuchroo 's plan to do something about ragging . Students can call anonymously to lodge complaints about any ragging behavior . In its first six months of operation , he says the center received 150,000 calls from students saying they were victims . `` Those numbers in the last two years have gone to 250,000 calls with 850 serious complaints , and we still believe this is only the tip of the iceberg , '' Rajendra Kuchroo said . He says he 'll keep fighting every day in India until the day the phones at the complaint center fall silent -- because students are no longer being victimized by ragging at school .
In India , `` ragging '' is a bullying or hazing usually in college . It's not just about the physical abuse but also verbal and emotional harassment as well. His father has tried to create awareness and opened a call center for victims .