I admit, I have invalid clicks... Can I manually delete my Adsense Account or change my existing account with a different name and delete existing websites with that account and apply for another one with my real information???
You can send them an e-mail and request they close your account down. That is unlikely to erase your history though. No you can not change your name. The only way to change your name is to close your old account and open a new one. Of course using a name that is not your own is fraud, so not sure you would want to pursue that route.