Father refuses to support

1.    No, he cannot be asked (directed) to support you if you are major person (one of his children) i.e. above 18 years age.

2.    He can support your younger brother for a fact he is still considered minor children of his as per Law. Your younger brother alleged full time employment is question of facts and even case made out in a Court or before a Tribunal it will fall falt. Even under Pension Rules your mother is called as dependent and not children(s) till father is alive. 

3.    Hence no case made out against once natural father (parent) based on presented brief.

4.    Suggested to solve amicably what you are seeking from your father, as adult children are at mercy of their natural parents even to live in natural parents registered home, once adult children are brought up – educated and found an income (employment) or lack of employment as facts are with you.