As Latin said, "so do your good deed for the day and throw some cash at him...or NOT". But you seem to have mixed feelings. You know he doesn't want to see you again but you know it was you who got him kicked out of his home. Most people would feel a little guilty about that.

What would happen if you sent him 5K Baht (never to be repaid) and then blocked him? We're talking about $150 USD. Would it really bother you that much if you never saw that money again? Would the loss of that sum impact your retirement plans? Why will you "not let him get away with paying back nothing" ? That's the part I don't get. Are you waiting for him to develop "effort and determination" to remedy his poverty?