When me and my best friend were 13, a male classmate kept calling her several times throughout the day. She didn't respond at first, so he took to texting her repeatedly... I suggested she talk to a teacher, but she felt too uncomfortable to do that. Later on, that boy confronted her... She told him that she wasn't interested in talking to him and threatened to tell her elder brother. He finally stopped troubling her after a few days, but it left a scar on all of us. The boy had even talked to her father on the phone, mimicking a girl's voice, introducing himself as a friend.