I make it simple: If you see any BlackSteel member teleporting during siege, tell our officers. Tell Lambertt, Pupps, or me. Or tell any BS member and they copy/past PM to officer. If we see it with our own eyes, we warn him or kick him from raid. Our guild member who teleports on mini-game was kicked from guild in 1 minute after it ends, and get all his DKP deleted. And we warn other guilds about his teleports.
We don't see any warnings from Vandalion, CoE or Destiny during siege. I sure Vandalion CAN communicate with our guild better with in-game messages (because both guilds are russian) if they want. We don't see any warning after siege. You don't tell me your name. Your guild tag. Don't tell me any details about cheaters. I don't sure if you see that siege with your own eyes or it was just your 5 minutes of fate on this forums.