I did an open mic not long ago and got up with a guitar player I didn't know who asks us (myself, bass + guitar) if we know Proud Mary by CCR. Sure thing. So he starts the song off alone and I'm thinking, 'is he doing the Tina Turner version?', because the tempo is much faster than CCR's. So I...
Lets hope he still has them, and isn't avoiding you because he doesn't.
I would just show up. There would be no excuse for him not to give them to you if you were right there.
If that fails involve the law.