I have blocked my account

This is a user to user support forum, so we do not know why it was locked.

If your account is disabled in iTunes you will need to contact apple to be able to unlock it.

More info in this article:

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

Use the link in the article to contact apple or:

Contact Apple for support and service - Apple Support

Good luck!

Did you contact Apple Support as suggested above?