I thought that we all have agreed when we created our PlayRohan account which in the terms and condition was mentioned:
GMs could in its sole discretion terminate (in our terms: banned, blocked) your use of the PLAYWITH Sites (Website, Grabbit, Item Mall Web, Forum) and Services (PlayRohan, Seal Online), FOR ANY REASON, WITHOUT LIMITATION.14. TERMINATION
You agree that PLAYWITH, in its sole discretion, may terminate your use of the PLAYWITH Sites and Services, for any reason, including, without limitation, if PLAYWITH believes that you have violated or acted inconsistently with these Terms of Service or any Service Agreement. You agree that any termination of your access to the PLAYWITH Sites and Services may be effected without prior notice, and acknowledge and agree that PLAYWITH may immediately deactivate or delete your password and user name and all related information and files associated with it and/or bar any further access to such files or the PLAYWITH Sites and Services. PLAYWITH shall not be liable to you or any third party for any termination of your access to the PLAYWITH Sites or Services.
meaning: GM could use their own judgement to ban if they THINK you violate or make the game unfair, of course to them. Will they listen to player? They might, but they aren't needed to listen to your bull****. Other words: We thought PlayWith is the President of a country, GMs are the Minister in the country, and the country is democratic. But it is clear that in the Terms & Condition it mentioned PlayWith & GMs are god in this game. There won't be a judge or lawyer could defend you.
I think you should just move on, every single game, (not only PLAYWITH / PlayRohan / Seal) has more or less same terms and condition. If you would like more friendly GM, you could create your own company and own games.