they cant hijack ur twitter account u probably told someone ur information!
Go to your account settings on Twitter and then the applications tab. Revoke the access so that MySpace will stop connecting to your account.
They don't allow it but they can't stop someone from making an account in that name. They have introduced the feature of "verified accounts" so that celebrities can verify their account to let their fans know that is their real account. If you find a fake profile, you can report it to Twitter and they will remove it. Just remember that they will have a lot of requests like this and it may take them a while to actually remove it from the site.
You could tell them to stop. Or you could report it to Twitter
Log in to your account and go to settings. Then, click on the last tab called "Connections". From there, you can click "revoke access" for any of the applications there to stop them accessing your account.
You can block Aaron Carter on Twitter to stop him from following you.
Revoke the applications access on Twitter.
Someone can delete their 8ball pool account by simply sending an email to the site to tell them to delete their account. Someone can also just stop playing the game and not worry about, but if it is a problem, they can delete the account or simply make a new one.
Stop tweeting
You can block them - you won't see any of your tweets when you do.
Go to your settings on the web version of Twitter and remove your phone details.
Email the website that the fake account is on and tell them that someone is impersonating you. Include a link to the fake account in your email and they should ban the user.
block twitter on your computer and on your phone