Thanks for your question. My name is Rofel and I will assist you with your concern.
What email address did you use to create an account?
Did you check your email inbox or spam folder for the verification email to activate/verify your account?
Yes. And I've deleted and re-added the account using the above email. I also tried creating the account with a different email address and had the same problem,
Thanks for your response. Are you trying to activate google services on your Samsung Galaxy S III such as Gmail, Google Play, Picasa and the others?
Never mind. I've worked it out myself. Thank you for your time.
Please follow the steps below so that you can activate the google services.
From the home screen, tap on Apps.
Go to Settings.
Tap on Account and Sync.
Tap on Add Account.
Tap on Google.
Tap on Existing if you have an existing Gmail email address or New if you don't have one yet.
Tap on Email then type in your Gmail address then Password for your Gmail password.
Tap on Sign in to proceed.
Your phone has the feature to back up your apps, settings (such as bookmarks and Wi-Fi password) and others. Put a tick on the box that says "Keep this phone backed up with my Google account" the tap on Next.
Press on the Home button to go back to the home screen.