Hi Hannah,
Call Orange when you get a chance but you might need to fight for a free repair. Twice I've had faults with my blackberry, the first time it just kept restarting which was very bizarre and they tried to charge an excess. I pointed out to them it must be a software fault and after about 45 minutes they finally agreed.
I had to call tonight again as there's another fault, the port to charge has come loose all of a sudden and now won't charge (honestly haven't dropped it) and before they even took my name the man told me I'd need to claim under insurance. i asked for a supervisor and was told no, tried to hang up and redial and the place was closed so not sure if this is standard these days or just someone finishing their shift not wanting to help....
Oh and if it was bought/ordered online, don't even attempt to use their shops. Last time I did that all I got was severe attitude and a patronising explanation that they don't deal with problems for phones not purchased in store
Let me know how you get on and good luck!