Don't vaste your time
And if you find him what you want to do with him? Suk his dicck? Forgett it man, the law protect cheaters... So even you look bad at him, he can suit you by law
this is the bad things those days.
If he own you money and you company issued him an invoice and have delivery proof, go to layer and claim for the money. Even he don't pay now and ignore lawyer letter, maybe one day he will come to france and they get his *** and put to jail until he pay outstanding money. This is all you can do.
B.R.,
Raskal