Should I try to get the manager on phone or just forget about this job? He told me to call?

He offered me a job a few months ago and the schedule didn't workout so I didn't end up going to the orientation I was asked to attend. He told me to call him back mid-may because he might have something for me in the summer, so I called about a week ago.
I left 2 messages on his phone about a week ago. Should I try to call and get him on the phone or just leave it?
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If you really want the job, I'd try one more time - try to time it so you can get him personally. Be friendly to whoever answers the phone and try to make conversation and ask them about hiring and what may be the best way to contact him.