Issues of copyright abuse/violation are required to be taken up directly with The Administrators and/or Moderators of Wincustomize.com IN PRIVATE.
Public accusation is often erroneous and can lead to issues of libel, hence all communication is to be kept out of the public domain.
When someone finds his/her works unlawfully on this site [just as with any other site] the very first information that is required in order to resolve the situation is actual clarity of THREE things.
1. The claimed unlawfully used item/s in question [link].
2. The claimed original artists' work [link]
Without any one of those items it is painfully obvious that no action can be taken.
On [private] receipt of all three of those 'items' action can be taken, and will be.
No-one is being given a run-around. It is simple reality that without a target or a source just saying 'User A has pinched my stuff....take it down" means absolutely nothing...in reality or in Law.
What stuff? Where? From whom? How was the 'stuff' obtained? How has its specific use violated your IP - relative to the source site?
The Wincustomize Admins/Mods are good...but they are not magicians.