@Davide Hi there 👋 I can point you in the right direction here, take a look at All About: Voicemail for all the info you need 👍
Hi I want delete voicemail
Hi @Amine_10721 and welcome to 3Community.
I can help you with this, to deactivate your voicemail you'll need to dial Dial ##002# and press call. Please give this a try and let me know if you have any difficulties.