Not able to discover a phone number, its a message that show up as from Virgin along with the ordinary ones that say allowances have been rolled over etc.
the messages are coming through around the same time each month and instructions are to go to www.virginmobile.co.uk/your account
Rather than click on the link given I have just accessed the phone records online in the normal way. Authentic bills are in the under £12 range and the messages are mentioning bills of £31.87 and £51.92 . Enough to cause domestic discord at home!