A few people have been scammed on the site, Only use paypal to pay for items for sale by other members. If they will not use paypal, its likely a scam NEVER SEND E-TRANSFERS OF ANY KIND.
So they are stealing their pool balls from "dung beatles". Or, may be the games are fixed, as dung beatles are directing which balls can go in the pockets.
Or, was pool invented by DUNG BEATLES?