Moms boyfriend is a dick

So around 2/3 weeks I was in a car accident with my boyfriend . The ambulance took us to the Hopstial. My BF with impact he couldn't remebe his address or anything so since I was fully conscious I gave my info out and they mailed his hill to my house where I live with my mom and that man.  He comes to me yesterday  yelling at me why is there mail coming from him to the house I told him maybe since they didkt know where to send it or thought we lived together. He goes off yelling at me because of that !!! He's like next Time I see his mail I'm going to tear it up and throw it away I'm like really you're really going to throw a big tantrum over mail!!! And you know that's Agaist the law to tamper with ones mail he proceeds with them why don't you bring him here then I'm like really back off you're over reacting . My mom didn't say anything she just stood there like nothing . She didn't tell him to quit it he was overreacting over fickig mail!!! geez my BF wil call and get that corrected !!! He's the type of "man" he doesn't like t when people talk back to him he thinks he's better than everyone he's the man of the house and shit... I goto my room annoyed that my mom didn't say shit!! He then continues talking about me as I can hear him since he can't say shit to my face hell say it from a distance like a coward that he is... He makes up that I'm supposedly paying my BFs s wtttf who fuck is he to make shit up when 2. I'm not paying someone else's bills even if it is my BF... 2 how was I to know his  bill was going to my house ?! It was an accident ! My mom was yelling she's a fucking idiot she's going to be paying another mans bills ?! I go run downstairs tell them why they talking about me saying false things that "mans" like I'm not going to say anything I'm like good you shouldn't you're not my dad or anything to be saying shit and making shit up .. You're only making it up cuz you're mad that I didn't stay quiet you're mad cuz you want me to be scared of you and not defunct myself !! You're wrong and my mom continues to not say anything... Idgaf about him it breaks my head that would believe some "man" over her own daughter !!!!