Thanks for your post and welcome to the Community Forums, jackssss,
Is this for landline service where the phone is connected to the wall or the landline services connected to the hub? Do out have anything else plugged into the landline service?
Also we have an online diagnostic here: https://www.virginmedia.com/help/home-phone-line-faults
Let us know if you need further help.
Cheers,
Corey C