bro's little bro

I've been trying to get a hold of my bro's little bro and for some reason he's not calling me back. Growing up I can;'t count how many times I stopped his big brothers from killing him, and know he's ignoring me? Damn punk. He screwed up his life for years on drugs, but is supposedly clean now. If I find he's back on the blow I'm going to put him in the hospital.