What's your definition of treating you badly? Not letting you date a 21 year old guy? Not buying you the newest fancy-schmancy bling bling-encrusted electronic device? If they really are treating you bad, as in beating the crap outta you, then you need to contact child-protective services. If not, just grow up and stop getting in trouble over silly little things.
If your parents are really treating you bad, i wouldn't run away. You could be kidnapped by even worse people. If i were you i would go to the counselor at school and talk to them about your problems. If it is serious, they will handle it. I hope it works out good for you :)
If you are being abused you should inform a trusted adult like a minister, a teacher, an aunt or uncle, a grandparent or a good neighbor. If you must, contact the local police. But your statement is too broad for any other answer. We don't know you or your situation. Maybe you're just mad because you have chores to do. More details please.