No offense, but they are totally right, this subject comes up a lot at gamefaqs, too
your account is your responsibility, it’s unfortunate but there’s not really much else to it
be grateful, on GFAQs all accounts are tied to a common usermap and if, for example, your brother called someone a faggot and got banned your account may be banned too (called a Usermap axe)
so at least you can still make a new account, in the case above you’d either be blocked or every new account would be set to read-only status which means you permanently lose posting priveleges