I certainly had a stalker who was actually an ex. We lived in two different states. Even during the relationship if I would tell him I was going to call him back, he would call first and if I didn't pick up, he would call my roommate's phone looking for me. Back to Back to Back. 3:51, 3:52, 3:53 and so on.
Once I told him it was over, He started calling my job, mind you, I was an accountant for Sam's club, never told which one I worked at, he must have called every Sam's asking for me until he found me. He was calling back to back even had his friends calling for me. Eventually I had to tell him that I got fired for him to stop calling my job.
Then he kept begging for my address so he could send me something, I said no. He called my parents house in NJ, don't ask me how he got their number, and he knew I lived in NC. He's asking my parents what happened to me, I'm not answering his phone calls, my parents are calling me, like r u ok, what did you do to this boy, please call him and tell him to stop calling us. Then he's leaving messages like, Why r u doing this to me, I love you, I thought you loved me and blah, blah, blah
.......he was crazy....point blank