Salamalikum sister,
I dont know in what context or state of mind you are writing this, but I do know something for sure. That you are supposed to obey your parents in EVERY matter except disobedience to Allah. I know I can't judge exactly in what situation you are in, but from my own experience of such fights with my parents let me give you some advice.
I always used to wonder why in the world did my mother shout. I would be sitting there doing nothing, and all of a sudden there will be a hurricane of words fired at me. I was confused. Why?
Only recently did I realize the actual reason they SHOUT: to be heard. I never really paid proper attention to what she was telling. I only knew that she was shouting. I never did what she asked me to. I never heard.
Be honest with yourself. Parents, especially muslim parents, can't be cruel to their children all of a sudden. What was the actual reason they are punishing you like this?
You say they never let you speak. Then show them what you have to say through your actions. Control your anger. Bear every hurtful word they say. Be eager and on alert for any help you can do them around the house. They'll definitely notice the changes! and Insha Allah, allow you to speak. It'll take time, but if you are extremely nice to them whenever they are extremely hurtful, they are humans too, they cannot be cruel to a child who gives them this much respect.
Shutting everyone out and staying in your room is not a solution. Nor is sitting on the computer, even if it's TTI. You might become hypocritical. It's sort of like missing a salah because you have to post a reply to a Salah doubt!
"And your Lord has decreed that you worship none but Him. And that you be Dutiful to your parents. And if one of them or both of them attain old age in your life, Say not to them a word of disrespect ("Uff"), nor shout at them, But address them in terms of honour. And lower to them the wings of submission and humility through Mercy, And say: My Lord, have Mercy on them, as they did bring me up when I was young" Al Isra, 23-24.
Tell me how it goes. May Allah make it easy for you to do the right thing. ameen.
take care and
Salaamalaikum.