FORCING FOR MARRAIGE AND ABUSING

My family was looking for a groom and I had denied saying that I love someone and I will marry him, so I told my family about this and they immediately snatched my phone abused me with vulgar words, and went through all my chats between us and they never returned my phone and they are now forcing me to marry a guy who they have looked for and also they said that they will make me marry the one who they have seen forcefully against my wish and they also threatened me to slap and kill me. They are not even letting me go outside my house and they keep abusing me all day saying you're good for nothing we will sell you in a village and my father is ill and despite I used to take care of his medical expenses home expenses all other daily expenses of our house which I used to earn through my teaching profession. now that also they have stopped me from letting go and teaching and they keep threatening. my cousin also threatened to say either get married or die. kindly help me out.