I feel your pain. I was in a living situation that fucking sucked and I couldn't afford to move out. And it sucked everytime people just said "save up, move out, easy". It's not always that easy. I do know that heaters and mini fridges eat up electricity, which means more money but right now that seems like your best option. Or move in with your parents (which also sucks) until you can save. Right now you have to way the lesser of two evils. Putting up with family is different than putting up with people who aren't.