If you come across a member that is violating the Terms Of Service, you can report that member on the Problem Member page.
The BrickLink Administration will review each complaint and take appropriate action which might include acknowlegement, warning to the member, Profile Merge, suspension of Privileges or termination of that member's account.
Profile Merge Request:
If you spot a member having 2 or more profiles on the system, you can report them into this form to be merged together. You must enter the from username and the to username in the boxes on the problem member page. You cannot request a merge into a profile that has unconfirmed e-mail address (buyer status is orange).