^This
If he's not answering your calls or emails, and there's no other way of getting hold of him, go to the cops.
Do you have a record of him refusing to return it?
( Labia Majora You keep on talking but it makes no sense at all, Thu 7 Oct 2010, 9:50, 1 reply, 15 years ago)

Or....
Do you have a record of the company buying it if he is going to be a twat?
( sporters I’m sincerely gratitude to you, Thu 7 Oct 2010, 9:51, Reply)

Yes I have all that paperwork.

(lkjshaglkasjdhglkhjz lkcvl; g;aodh;owih, Thu 7 Oct 2010, 9:55, Reply)

Then it is theft 100%
Give him one last chance to give you it back or the Police will be involved
( sporters I’m sincerely gratitude to you, Thu 7 Oct 2010, 9:56, Reply)

I'd email him one last time telling him you're going to have to get the police involved if he doesn't return it
give him a deadline to respond and then call the feds.

EDIT: whoops, what Sportscow said.
( Kitty v1.0 desperately naive, Thu 7 Oct 2010, 10:11, Reply)

damn straight

( disasterprone "Pyjamas caused the Holocaust", Thu 7 Oct 2010, 10:25, Reply)