Is there such thing as phone harassment?

I went out w/a guy on a date one time a month ago. It was okay nothing special. He called me a few days later to ask me if I would go out on another lunch date. I said yes. Let me know the date and time and where to meet you. I did not hear from him so I thought he was not interested. A week later I have been getting calls from him. I do not pick up because I really do not want to be bothered by him. Is there such thing as phone harassment? He calls my cell and leaves me messages. And I am really getting annoyed now. Can I go to the police if he keeps calling?