Hey Jimmy,
You need to push this with the police and insist they pursue this, if they are dragging their heals threaten you make an official compliant. At least they should be able to have them on handling stolen goods.
Looking at their Facebook page they are producing logos that are registered trademarks of some big companies, i'd send a few emails & grass them up. Big companies will send them a cease & desist injunction letter.
Good luck