Yes write to disney explaining everything, they have your toons on their server backups even if theyve been deleted from your account.
Also if you don't how this happened you want to make sure you change your account password (assuming you havent thought of this already).
Also you may even want to go as far as changing your username aswell, Disney could probs help you with this aswell (although changing your password should be enough).
'Keep it Kool

'
P.S. And warning to all: 'remember keep you account details to yourself, don't tell anyone or give out any infomation, even if you get an email that looks like it's from disney asking for details, i don't think Disney would ask for a password on a random email, and i would assume my account name was enough infomation. Altho in the case on requesting toon restroation that they may want password to confirm operation, but this is u sending to them on specific reason and not a random incident.