Fantage gets a lot of emails so it usually takes a couple days for them to reply (if they reply, they don't always). By the time they respond your account should be unbanned again.
What you should do to prevent this from happening again is to change your password. And don't make it easy like "password1" or "macaroni". Make it hard. Like a sentence with numbers or random words with some numbers together. Just make sure you'll remember it or write it down.