How do I change my screen name on Facebook?

My friend changed it once to a stupid name when I left my facebook on and she came over, and I%26#039;ve been trying to change it back to normal!! And I know you go to account settings, change name, etc. I%26#039;ve sent the request dozens of times. I%26#039;ve waited 24 hours as it says and it doesn%26#039;t change!! WHAT DO I DO?!?!?|||You have to wait awhile. If you really want it changed, contact facebook. Go to Account, Help Settings and send them a message. Usually that speeds up the process a bit but there is no guarantee.|||Wait. It takes a while. Or you can just make another Facebook account and readd everyone. No big deal.