Assuming yours in not one of the push out ones.
Phone 789 from a Virgin phone or 0345 6000 789 from any other. They will sort you out
you'll need to give the Virgin mobile team a call on 789 from your mobile or 0345 6000 789 from any other phone & request a replacement
Alternatively you could trim it down to size yourself (sounds scary but really easy).
If you want to say thanks > click 'Kudos'.Answered your question? > click 'Mark as Helpful Answer' also.