Thanks for your post on the Forum. I'm sorry to hear that you are experiencing a problem with your roaming service while in France.
Please have a look at the following post, which contains more information about roaming: HELP GUIDE - Mobile Data Roaming for Pay Monthly / SIMO Customers
or via our online Help & Support page: Using your Virgin Mobile abroad FAQs.
If you are still having a problem, please let me know and I can look into this for you.
Virgin Media Forum Team
Need help changing SIM card? Find out more about activating your 4G ready SIM. 4G SIM Swap Help