That does sound very suspicious

Ive had some dealings with Rouno and Jouno, They seem to be diffrent people, You can sometimes tell becuase they type diffrently, but it could all be an act too

I think you should perhaps put a strict limit of 2 accounts per HOUSEHOLD, So if a third account is created then it will start banning the accounts from first made to last.

Example: My account is irTheno, my brother creates an account called (insert name), my sister creates an account, It auto-bans irTheno, If a fourth account is made then it will ban (insert name), so on and so forth

Yeh i suppose it could escalate because i know im marked as dupe with a friend, Played the game as his house.

But if you think about it with the right tweaks its a really good system, deters people makeing dupes if they know there main account would get banned.