Hi Anna100👋, welcome to the community! Thank you for posting.
Sorry to hear you have been having difficulties getting support with a technicians appointment for the landline switchover. Just ahead of sending you a PM to offer further support with this would you be able to let us know;
1) If you have received the adapter for the switchover
2) If you have been given a switchover date, or if the switchover has already happened but you need support getting your services working again?
3) If there is any specific reason for the appointment request? For example, needing to relocate the hub? (Just so we can ensure it is booked in correctly!)
You can find additional information about the landline switchover here 👉 Landline Switchover | Virgin Media Help and in this leaflet 👉 Switchover_Migration_Leaflet.pdf (virginmedia.com).
Thanks for your patience whilst we get you some support! All the best 🌞