How should I deal with this?

So I used this temp agency to get a short-term job before I go to grad school this fall. Got a random data entry job, everything was fine. Now my recruiter (the person from the temp agency who placed me in the job) has called me twice (went to voicemail both times because I was at work or driving) to ask me out. I feel this is really inappropriate, and I’m slightly creeped out by it since he has access to all of my personal info (Full name, address, SS, resume, etc) from when I applied to the temp agency. What should I do? Ignore the voicemails? Call him back and say “Thanks but no thanks”? Talk to his supervisor?