Calling someone repeatedly and/or back to back in an effort to force them to answer their phone. Then calling from someone else's phone or pressing *67 to restrict your phone number hoping they will answer. Scrolling through their missed, received, or dialed numbers list on their cell phone. Reading their text messages. Driving or stopping by their job or home uninvited. Inquiring with their friends or family about their whereabouts.
Tonya: "Michael called me 10 times today within 2 hours and left me 3 messages"
Lisa: "Wow, did he stop by your job again too"?
Tonya: "No, but I think he called me from a private number at 5 am this morning"