Thank you for joining me on private message @Allliekat
Hopefully this is all sorted for you now. Any further question or concerns, please come back to us on this thread and we'll be more than happy to assist.
Virgin Media's information about home phone switch over can be found here. I'll also leave the link to the Future of voice website should you need further information.
If you believe the issue to be resolved you can mark the thread as resolved by clicking the helpful answer given and this will show anyone else having issue that an answer was given and direct them to the post, alternatively you can just like or 'kudos' the post if it helped you.
All the best,