Thanks for getting in touch David77 and welcome to the Virgin Media community forums.
Unfortunately we cant provide a proof of usage, we are only able to provide a proof of purchase for your handset, this will include the below information
The purchase date
The handset make & model
Mobile Phone Number
Date that the customer reported the handset lost or stolen to us
Please let me know if you would like me to get this started and I can get the request sent over to you, I would need to take some information via a private message to do this. Please come back and let me know.
As a Very Insightful Person, I'm here to share my knowledge. I don't work for Virgin Media.