Solution
Just block them or if it gets serious enough contact the authorities.
Also, you can just say "*beep* Off". Kids these days and their social media. Two fights broke out at my school because of arguments on Facebook. Also, choose a complex password. The best thing to do is to tell people to "*beep* Off" or just ignore them. Teens are just *beep* stupid -_-
Also, a nice punch to the face would work.