When I was 12 I was the hub for FidoNet mail in my smallish town. I was tweaking the settings before heading on vacation. We left the next morning, and returned a week later. We came home to an official notice from the police to contact them immediately. My parents did, and pretty soon 2 police officers showed up at our door.
They wanted to know who had been "hacking" from the second line in the house. It turns out I forgot to enter the area code for the FidoNet long distance number, and some poor souls had been getting a phone call at 3am with "strange noises", which auto-dialed every minute for 3 hours straight.
The police had disconnected the line, and I had to spend an hour explaining to the police officers what a BBS is, and what FidoNet is. I remember trying to draw a diagram, but it was in vain. In the end they just left confused, reconnected the line and I promised to be more careful in future.