Was your account hacked? I imagine when the credit sites steal accounts, they do the WoW methodology and clean the account out and then make level 1s to send credit spam. Was your account password changed or anything? They could've banned just to be safe, with you contacting after to get it restored.
Or maybe I'm misinterpreting their wording in their e-mail to you. Either way, contact them, find out what exactly they found in your account, and show them it was a misunderstanding.
And by the way, you can't lawyer up for any of this. Read the TOS/EULA. They're allowed to ban you at any time. Nothing they did violates the law. So the poll seems a tad strong.
"Sir,we are beginning our search for these rumored 'underwater villages'.They will not stay hidden for long". -Battle Droid Commander OOM-9!