Then have someone take him when you can prove you were at home. Have the peopl do it when they're not there and don't ever let any of your neighbors know you were involved. If he's not in dire need you probably wont get very far in getting him away from them through the Humane Society. Unfortunately dogs must be in horrible condition in most parts of the world before the authorities will intervene. I hate telling someone to do something illegal, but I think you must in this case. He's being abused whether or not they hit him. Sounds like they are disgusting "people".