The male is 15 years of age. Through facebook, he accessed the number to my workplace. I work with Target. Since then, I have blocked and removed him. I was on a voice-chatting system with him and someone else, and they had prank called my work. I immediately got onto them. I removed myself from them, I no longer speak with the male unless needed. Since then, my workplace has gotten many prank calls coming in, often times he asks for me, or does something ridiculous. I received warning of this happening when I wasn't even on the job, I was shopping, and I was told about it. I need to know what I can do.