Electronics

So I need some advice... My 7 year old I think is addicted to electronics. He wakes up at like 7:30 and starts asking to play his game or watch TV. He gets mad and starts crying when I take the electronics away. He tells me he wants to go live with grandma because I'm mean and won't let him play. He won't play outside or eat cuz he wants to play his game. I have done the take electronics away for a week and he doesn't change. I'm so fed up with all the electronics.