Hair dye

I live in a house with really strict parents, they turn off the WiFi when they aren’t home, I never get to go out unless it’s very important etc. and one of the things that they most definitely do not let me do is dye/bleach my hair. I’m 15 now and have never done anything to my hair, or even shave! I don’t even have a phone. ( I’m writing this off of someone elses). Anyway, I decided to lighten my hair naturally and I found that using hydrogen peroxide mixed with water and baking soda could lighten it. I have really dark brown hair (almost black) so I didn’t expect it to lighten much but it did! It went from dark brown to a auburn/light brown color and now I’m freaking out. My hair is currently a bit damaged and the color is uneven. I’ve begged my parents to let me dye it black but my father is against it. He thinks I should walk around like this for my punishment. I would be fine with this if it wasn’t for the wedding and birthday party coming up in a few weeks. What should I do?