Getting bullied by my brother

Hi my names Alexandra Rodriguez but I get used to being called Alexa I'm 16 years old, I do have a brother his name is Alexander Rodriguez his 17 years old his one year older than me and yes we have almost the same name, my name just has an A in it.

But anyways I get bullied by my brother in school and at home he punches me, calls me names and more, to be honest I didn't do anything to him until it was my 4th year of high school.