If you're having problems with a Google account in general, you can:
For AdSense users
If you think your AdSense account has been compromised, this article will help you determine which step to take next to attempt to secure your account and regain access.
Reset password
If you still have access to the email address that you use to sign in to AdSense, you can reset your password to prevent others from accessing your account in the future.
Submit account recovery form
If you no longer have access to the email that you use to sign in, or you aren't receiving the password-assistance email, you should fill in the Google account recovery form.