You're saying that you know for sure that it can be reverted? Self-exclusion? Do you mind to provide a supporting evidence for it? Because if it can and they do [and that you can prove it], it's a very wrong procedure and against the gambler protect policy and it is a very serious situation.
While I don't represent Rollbit, would just like to say that a self-exclusion is not, and should never be reversed (theoretically it can), for the simple fact that self-exclusions are in place due to Gamble Aware regulations, and any self-respecting casino, at least any licensed casino will never undo a self-exclusion or a self-ban.
Thank you. As always, your "insider" insight from casino perspective is very much welcome and appreciated. OP, as you can read above, casinos take that ban you impose on yourself very seriously. It is a common and known practice by casinos, not only Rollbit, to refuse to lift a self-exception. They are simply sticking to the rules instead of toying with you when they ask you to wait for the period to runs out.