It seems like, at least the company linked to by AOTT Luv, you just pick out an item and whatever random letters you want on it they'll put on them.
That's one thing, the special order stuff, the company may be licensed, who knows. Just might not tell them about them being thongs- may just say various items.
But the fact that they were created and sent to a store to be marketed strikes me as over the line.
http://www.greeklicensing.com/default.asp handles most NPC and NIC group's licensing, including Tri Delta (not KKG though)
The greek-house.com is NOT licensed by ANY of the groups is seems. If you really want to take some action, contact those greek licensing people, they're like attack dogs and will hunt them down, and probably sue their asses off.