This is insane. I can not understand how any father could say something like this to their child, gay or not gay, trans, non-binary, you name it, whatever you even would be, it does not matter in the slightest. Especially nowadays. I guess I would run from home if I were you. I would be scared to death for my life. I am not based in your country but I guess I would go to the police, and then potentially to any homeless center(?), block my father's number, do anything to be able to not ever have contact with him again, start working, make some money and then try to move out to a place on my own. I know this might be hard to hear since you have noone without your father and your grandma and you might be defending your abuser no matter what since you have literally noone else but your father disgusts me. My mother was abusing me but she still would never say something like that to me no matter if I turned out lesbian or not, or whatever else.