My mom is just . Being really unfair and mean..?

I was watching a movie when my mom started screaming my name. Literally screaming . She sounded furious. I went downstairs and she was screaming words and pointing at something . I saw a plate and some black stuff on It . I remembered . Two years ago, my mom bought guacamole but she said I couldn't have any. That sucked , because I love that stuff ! So after my parents were asleep , I crept downstairs and put some on a plate and went to the basement to eatit . I guess I didn't want to wash it because I would wake my parent up so I hid it behind some coats in the storage closet . And I forgot about it . Well , she was gonna find it sooner or later. But that wasn't it. Ashamed , I went to my room. And I was sitting there. And my mom barged in. It's what my mom does. She yells something, slams the door and walks out. Less than thirty seconds later, she walks in yells something else, and slams the door , and leaves. She did this about twenty times in the last thirty minutes. Here's what she said . "you wouldn't give a s*** if your dad died would you?! You don't care about this house at all . You only care about yourself . Oh my god, I wish you were gone . I don't want you. I'm going to make sure your dad hears about this ." then she took a bath. What the heck? I love my dad! .. Well after she took a bath , she did the yell and slam thing three more times and she said " you know what ? I wasted my precious time and voice yelling at something like you. (thanks mom.)" then she called me scum. I know leaving guacamole in the closet was bad.. But it didn't stink ! And it was two years ago. All I wanted was some guacamole ! I know it was bad of me ! Really bad, but who knew my mom would get this mad ? It's not fair because I can never talk to my mom. I NEVER lie , but she calls me a liar. She never believes or listens to what I have to say. Even when she's not mad! My mom isn't the talk and understand or bonding kind of person . What should I do now ?