repeat- rejected

Dear Sir/Madam, My name is Abhishek Ghosh. My parents had an intercaste marriage where my mother was an ST and father belonged to an upper Caste. As soon as I was born, my father left my mother and I was brought up as a tribal and consequently, shared all the indignities, handicaps and deprivation normally suffered by the tribal community. My father never returned to us and as a result, we suffered a lot in the society. Now I have completed my studies and want to apply for a job under ST category. Please advice me as how to proceed further in this issue. Best regards, Abhishek Ghosh