Smokahontas is right about that though. Moderators and SuperMods can't do squat about your profile. We can only delete comments, and answers (and Supers can delete questions) but we can not do anything beyond that. If someone changed your age, it would have been an administrator. If you want to change it back, message an administrator ( here - www.girlsaskguys.com/contact.html ) or message them through email at firstname.lastname@example.org and explain it to them. They'll get to you eventually, and likely fix it. Best of luck.
No moderator can change your age or anything on your profile. Maybe you clicked the wrong age category by accident, I did that too when I first created this account :) I think you just have to wait until your next birthday comes or you can make another account with your actual age, I wish I could change my age to my actual one D; just ask an admin and explain how you got the age category mixed up and they maybe will change it. Hope it works out for you.