how do I enable a disabled iTunes account ?

Try contacting iTunes support and do following steps:

1. Visit https://support.apple.com/choose-country-region/itunes
2. Choose Your Country or Region
3. Next click on "More about subscriptions and purchases
4. Scroll down. You can see the support link -> click on it.
5. Choose Apple ID & iCloud
6. Choose "Your account has been disabled in the App Store and iTunes"
7. Click on continue and connect to support team. Answer few questions and they will guide you to restore you disabled account

Hello ~ Go ahead an contact support as this is Apple’s way to let you know that there may be an issue with your account.

If you see a message that says 'Your account has been disabled in the App Store and iTunes'

Contact through link or by going to upper right hand corner and click on Get Support or:

Contact Apple for support and service

~Katana-San~