I have a Stalker

I work at the mall, so when we get prank phone calls we don't really think anything of it. So, I was at home partially enjoying my day filled with cleaning and laundry when my co-worker calls me. I ALWAYS answer the phone if it is someone from work because we have some unreliable people working with us. So she tells me she was busy but the phone rang and we are required to answer it. The voice on the other line asks specifically for "Cristi" which is me, and I am only known by that by people that I know well. Well, she tells him that I am not at work and asks who is speaking. He says his name is Robert and then proceeds to tell her that he used to be one of my clients and he wants her to stay on the phone while he masturbates. DISGUSTING. So if that's not bad enough he tells her that a few weeks ago I sat there and talked to him on the phone while he did it. Sick. I told her if he called back then to call the police, and he did, she she called. Basically nothing can be done. He has called 6 times in the past two days saying the same things. Now I am afraid to work alone at night.

I want to know who this creep is that is specifically asking for me. I have done a lot of creepy people, but I didn't think someone would do something like this. I am seriously scared. I don't know what to do. My manager told us to just call security, but they have flashlights. Somehow that doesn't make me feel completely safe.

On a Happier note. Today was Matt's birthday. He turned 27. We spent the whole day together!! It was nice!