Welcome to Vodafone Community
If you've tried too many times and Hard Locked the phone then you'll need to ask Vodafone to send it away to be reset @geordiedel
You may just need to make sure your using an activated sim card i.e connects to mobile data etc, and it might just not be Hard Locked
Current Phone > Samsung Note 9 _512Gb > Model: SM-N960 Hybrid-Duos.
Samsung One Ui / Pie.
Samsung Gear s3 Frontier Watch.