I’m so disgusted right now,,, Drinking at noon — letting a child leave the house unattended at 6 pm when it’s dark?

My dad is a fucking deadbeat, I swear. When mom leaves the house for 1 NIGHT, or 1 DAY to do something for work then go to some sort of work party, or something. My Dad never properly takes care of me or my sister when she leaves. His behavior is absolutely repulsing. My mom literally told him to stop drinking, because he hurt me last time he drank + he forgets all his responsibilities and we’re left with a guardian who is drunk and can do absolutely nothing without screwing up. He wonders why I fucking hate him. I literally had nothing to eat today, I asked him to buy groceries at least so I can make something, because we literally have NO FOOD in the fridge. I came back 20 minutes later and I found 3 empty wine bottles next to him. God damn. My younger sister literally walked out the door 10 minutes ago, and he let her. I had to run after her, take away away the keys, and tell her it’s too late to go out by herself. This environment is fucking dangerous, and i’ve got a guardian who is incompetent as hell. Fuck me. Mind you, this is the 3rd or 4th time it’s happened. I’m only 15, and I don’t get paid at all for basically becoming the babysitter after my deadbeat father’s incompetence. How the hell am I supposed to handle this alone. He literally started boiling water, and I noticed something was wrong an hour later,,, and IT WAS STILL BOILING. IT WAS BOILING FOR AN HOUR. IT WAS LIKE BOILING OVER, AND THE WATER WAS GOING INTO THE FIRE,,, WHAT THE HELL. COULD’VE BURNED DOWN THE FUCKING HOUSE. I wish I had succeeded in running away last year. I have also texted my mom about over 20 times and she hasn’t answered. Fucking hell, I swear to god if she blames me again for the shit my father did — i’m gonna lose it. I keep telling her what happens, yet she doesn’t seem to care + keeps leaving us with him overnight / for days. Then she blames me when it goes wrong, or tells me “you’re not the adult so stop acting like you’re one”. I KNOW I AM NOT THE FUCKING ADULT, OKAY. WHAT DO YOU WANT ME TO DO THEN, LET THE SHIT HAPPEN — AND LET THE HOUSE BURN DOWN, AND LET SOMETHING AWFUL HAPPEN TO MY SISTER BECAUSE THE ADULT YOU LEFT ME WITH IS A DRUNK INCOMPETENT BASTARD?