Sounds like your parents are way out of line. Unfortunately, when you are young, you depend on getting supported by someone. But that is a condition that time will change. You won't have to be there forever.

The post above gives you specific advice on getting help. It's good for you to know that you can call someone. You might want to ask yourself if things are bad enough that you would rather live in a foster family setting. There is no guarantee that such a placement wouldn't come with big problems of its own.

Sometimes people under stress say ridiculous things that do not reflect what they truly believe. Your parents sound like they are not handling the stresses of their lives very well, and I suspect they are immature people. It may be on you to become "the adult in the room." That's awfully unfair to a kid, but sometimes that's just how it is. Build up your network of support as best you can, among others your age and any trustworthy adults you can talk to. Sorry you are dealing with this. The good thing is that you have enough on the ball to know there is something wrong with your parents' behavior.