My parents are hoarders and I can't take it anymore!!!! Please help!?

I have been living in a house full of junk for 19 years. Its incredibly embarring!! My sister won't bring her boyfriend over and sometimes I'm scared to bring my new college friends into my house. I tried bringing my one friend into my house and I can tell in his eyes that he is disgusted. We can't walk in the hallway without maneuvering our body. At night I bump into things. I try to clean and my dad yells about us throwing out garbage and "what will the neighbors think?" Its awful! My dog sleeps in a cage and my mom puts boxes and bins on top of her cage. I feel so bad for her. I try to clean certain areas of the house and my mom ends up messing it up again with her junk like 2 hours later. My dad comes home and puts his junk on the dining room table. I'm tired of cleaning up the table everyday just to eat. My dad is just lazy and cares way too much of what the stupid neighbors will think. He keeps things that used to be his moms and she ped away 16 years ago. My mom puts everything into boxes and bags as if thats going to help. She keeps really old paper on unnecessary stuff. Hoarding runs in my family. My aunts on my moms side hoard and my parents do. My uncle on my dads side hoards also. The weird thing is my none of my grandparents were hoarders. My sisters and I don't hoard. We hate living in messy spaces. I saw on the show hoarders that they put all of the moms junk into her bedroom so that the rest of the family doesn't have to live in the junk. I really feel like doing that because I am soooo annoyed. My parents yell at me because I don't clean as much as I used to but how can I when everything gets messed up after 2 hours...What should I do? I want to bring my friends home to hang out and my sister wants her boyfriend to come over.