No, you don't!
Do you honestly think that they are going to turn around and tell him to pay you back, and that he's then going to do so out of the kindness of his heart? No, of course not. They will advise him, and he doesn't have to tell you what they said, so he'll sit there until you bug him again. Then you're another month down the road and no closer. Just go and start the proceedings now, you can do it all online, these things don't just happen overnight.
At least he'll know you're serious then. Right now, he's gambling you'll just go away.