My son has used up all his mobile data for the month and there are still 9 days to go to his refresh. I want to take his phone away, and put on airplane mode, so he can't use it, but Virgin are going to charge me £2 per day for unlimited use. I don't want this. How can I stop it? Do I even have a choice? He is on a sim only monthly contract. I really don't want to have to call 789. Does Virgin no longer have email capability? Thanks.