Why is my brother still being a baby?

Okay..I’m seriously on the verge to punching my brother, not even kidding. I was looking for the house phone & my brother had it in his room..so he decided to be mr. cool & throw it on the other side of his bed. So I jump on his bed & land on my belly reaching for the phone, so then he pushes me off the bed & I ACCIDENTLY kicked him in the face. Not even hard enough to hurt a baby, so I’m laying there on the floor trying to get up, then he stands up on his bed, jumps down & lands on his butt on the bed, with his feet kicking me & knocking the wind out of me. So there my mom was standing right behind him acting like he didn’t do a dang thing. So my mom yells at me & tells me to get the phone & get out & that I’ve only got2 freaking minutes on the phone. There I am laying on the floor crying, trying to get my breath back. And all my brother says is that I’m a baby for crying. I’m SO tired of my mom sticking up for her little baby. He’s 12 years old for pity sakes. My mom & dad don’t listen to me when I tell them he’s being annoying & he’s bothering me. They say- “& I’m sure you don’t act like that.” What am I supposed to do?!?!!!???!?!?!?!?!?!?!