I grew up in a fairly similar situation.. I just spent as much time away from the house as I could, mostly in the library, and at one point I got a bicycle which was a great freedom for me .. I ended up with the fittest legs in town, mostly because I couldn't stand to be at my house, and rode all over town, all over the county, in every last bit of my spare time.

Are there safe places you can spend more time, to minimize your exposure to them? Activities you can sign up for? Because they may not be capable of changing, and I wouldn't necessarily recommend trying to get them to as it could actually make it worse and really frustrate you. However, if you think they might be capable, if you think they might just not realize how their behavior is affecting you, maybe you could request a face-to-face with them, ask for 15 minutes of their time and have a heart to heart? Good luck.