My Brother Just Got Out a Rehab Center and Is Straight Back to Drugs and Alcohol. What Should We Do?

My brother is 21years old and has been smoking, drinking, popping pills, taking cannabis since he was 12-13 years old. He has dropped out 4 universities and is a heavy alcoholic, his priorities in life are completely misplaced, he is a pain to be around and nobody in the family enjoys his company because he is a bully, abusive, lazy and to put it in a nutshell tends to be a waste of space. We finally sent him to rehab which cost us a lot of money, and guess what he comes out, next day, straight back into lying, taking cannabis and hiding to drink when he thinks nobody can see him. We are sick of him because his behavior is affecting my parent’s health and the family peace. He has everyone fooled including his counselors who keep calling to check up and he tells them he is off it. I have tried to be supportive especially since he got out, but I CANNOT stand the lies, hypocrisy and bad temper he is dishing out. He thinks he is invisible and I’m sick of him.