All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu 'alyhi wa sallam, is His slave and Messenger.
We supplicate to Allaah The Almighty to reward you for what you have done with your brother. You should have patience for the sake of Allaah The Almighty at the bad way he treats you. You should always consider the verses (which mean): {Repel [evil] by that [deed] which is better; and thereupon the one whom between you and him is enmity [will become] as though he was a devoted friend. But none is granted it except those who are patient, and none is granted it except one having a great portion [of good].} [Quran 41:34-35]
We also remind you of the Hadeeth of the Prophet, sallallaahu ‘alayhi wa sallam, when a man came to him complaining that his relatives mistreated him. He said: “I have relatives with whom I try to keep in touch, but they cut me off. I treat them well, but they abuse me. I am patient and kind towards them, but they insult me.” The Prophet, sallallaahu ‘alayhi wa sallam, said: “If you are as you say, then it is as if you are putting hot dust in their mouths. Allaah will continue to support you as long as you continue to do that.” [Muslim, Ahmad and Abu Daawood]
Also, please note that you are not required to settle his debts, for he is the one to bear the sin for not clearing them, because Allaah The Almighty Says (what means): {And no bearer of burdens will bear the burden of another.} [Quran 35:18]
Allaah Knows best.