My family is so negative all the time!!!!?

I live with my mom, grandma and younger brother. My younger brother is never home and I don't blame him because being at home is hell. We're not the most loving family. We're very cold towards each other (We don't say I love you, spend quality time, and we don't really talk to each other) which doesn't really bother me as much anymore. What does bother me is that my mom and grandma are constantly bickering and complaining. I always clean my room but today I cleaned it inside out (closet, dusted everything, organized it thoroughly) and of course, my grandma said "Oh wow, she cleaned her room, I guess the world is ending." I also helped my mom clean the house since we have some family coming to visit us tomorrow. Anyway, I was in my room playing Black ops and my mom said something to me but I didn't hear her because I get so into the game so she went around slamming doors and cursing. I don't get how people can get so angry and upset about everything. There's a strong negative energy in this house and it's driving me nuts. If I'm home, they're complaining about how I'm not doing anything and if I'm out volunteering or hanging out with friends, they complain about me never being home. I can never satisfy them. I also had an interview today and instead of encouraging me and making me feel good they started bitching at me which made me reschedule my interview because I just felt angry and upset. I'm going to an out of state college next year because I'm sick of this, I just need help right now. I don't know what to do or how to cope with these negative people.