It actually depends on why. If あなた were suspended unfairly, like is people reported あなた for nothing, または あなた logged onto a server with past abuse, if あなた write to the F4, they should be able to help you.
I've actually been deleted before because I logged onto a public computer with past abuse on it, and I wrote to the F4 and explained the situation, and they reinstated my account.
Here's a link to the F4 member who helped me and got me mine back:
link If あなた haven't done anything wrong, あなた should have nothing to worry about, :)
