Won't achieve much as eBay favour sellers particularly if they have a shop, are power sellers, etc because they pay for that privilege.
Not to mention, you as the complainant, must prove it, as mentioned before then you are in the wrong and not fleabay if it is deemed unfounded.
Stopped selling on fleabay.
Use Gumtree or Oztion instead.
Oztion (Oz auction site, fleabay similar) no fees to list and nothing to pay unless sold.