What should I do?

My parents mentally and orally abuse me. my mothe pushed me to the ground tonight and called me pure evil. Think thats bad? Only a nightly ritual of telling me how im worthless and heartless I am incapable of love. While this occurs my little sister sits getting praised and adored. I know it sounds like im a jealous teenager without worries but I can not explain how many nights I have considered suicide, running away etc If I had the courage I would no longer be here. For years I have asked for a therapist someone who I could finally tell how I feel when I try to tell my family they tell me im f****ing dramatic i need to get over myself. They scream at me for not showing enough kindness to my precious sister who btw is traveling to turkey and england this summer as i stay home and work so that I can pay for part of her school tuition and so i can purchase her a cell phone whe she gets back because its what a sister should do. I have begged and begged for a therapist to speak to but,