It appears that my account has been desactivated in iTunes and Apple store

This is primarily a user-to-user support forum; other Apple users like you. You will need to contact Apple Support. The following Apple Support article includes a link that you can use to contact Apple Support: If a message says 'Your account has been disabled in the App Store and iTunes' - Apple Support

The only way to resolve it is to contact Apple Support. Either click on the blue words below:

If you see a message that says "Your account has been disabled in the App Store and iTunes," contact Apple Support for help.

or

click on the following for other ways to contact them: Contact - Official Apple Support