Welcome to Vodafone Community
Is the alternative network sim card your using activated i.e connects to mobile data etc @Gulalabula
This is a similar thread NUC-not-unlocking-Sony-Xperia-XZ.
Customer services can check the Nuc that's been supplied as well as can the Vodafone Social Media Teams via Contact-us-for-account-specific-queries.
🌈 Stay Safe & Stay Alert. 🌈
Current Phone > Samsung Note 20 5G - SM9860 Snapdragon.
Samsung One Ui 2.5 / Android 10.