I have no sympathy for bad parenting. A good old fashioned thump on the rear solves a lot. These kids are victims of extreme bad parenting. When I was a youngster if I didn't follow the rules, stuff got confiscated. I only talked back once to pop - the first and last time. A knuckle sandwich across the back of my head solved that problem.
Kids addicted to video games and internet? That's a real sad commentary. Their parents are so weak, they have to get psychological help. Just turn off the damn computer and unplugg it. If the kids are rebelious take more drastic action.