Depression Is Killing Me?

I don’t even know what to do anymore. It’s because of my parents bickering, having no friends, and being bullied by words from a boy. I’ve told everyone, my parents. They say they’ve got no time for me. (My dad is at work/golf from 5am to 7-9pm. He has his own company and half of the time he is on his computer. My mum is on her computer and doesn’t pay attention) At school, we haven’t got a counselor, my teacher doesn’t listen, and my ‘friends’ laugh and tell me I’m lying. The only person (or thing) I talk to is a teddy bear. Usually it ends up being cried into, or punched repeatly. I don’t cut, and I never will. Truth is, I’m too scared. Though, I have dug my finger nails into my arms, and scratched at a sore on my head, to make it bleed. I seriously don’t understand it anymore. I have random mood swings. About an hour ago, I was bouncing off the walls, next thing you know it, I’m hitting pillows. I have thought about killing myself, and end up crying, telling myself no one would care. It feels like I’m in a neverend maze, I can’t get out. Fake smiles and stiff laughter are all me. Of course, nobody notices. Nobody notices anything. I’ve been called a nerd, a dick, been pushed into fences and had my hair pulled out. I’ve been told to go die in a hole, I’m worthless and nobody wants me. I’m beginning to believe I am what they call me. Why is this happening? I don’t know how to handle it anymore. Please tell me how to keep myself going.