James,
They use whatever pix they like, even if they are of something different than what they are selling. You can have Ebay take the listing down if it is your pix.
It is called VeRO. See http://pages.ebay.com/help/policies/programs-vero-ov.html. You can e-mail them at vero@ebay
They have removed everything I have sent to them. often they just re-list it, but after a period of vigilance, they give it up. I also send the seller a note explaining they they are using my material fraudulently, esp when them pic is of something other than what it purports to be, and let them know that I will also contact Ebay and report their fraud.
I can't go into too much detail, but from their past listings I have a good suspicion where they material comes from, and quite likely it isn't want it is labeled as.