This is a problem on a vast amount of servers, immaturity leads to GMs that always give the right to their friends, overreact when proved wrong, help with their powers their own legit accounts, and so on and so forth.
I doubt the info is wrong on purpose, though... they most likely changed caps/rates at some point and forgot to update their RMS page. There's a saying that goes "don't blame on malice what can be explained by ignorance", likely they do not mean to be "evil" as much as they "didn't think about being better than that until after the fact".
Of course, whether or not they can grow up and improve can be somewhat easily guessed depending on their response to your very valid complaint.