If you dont mind me asking, what alarm do you have? Brant is famous for stuffing up and rendering the car immobile.

You problem could be something related to the immobiliser for the fuel pump - can you hear it priming every time?

Another cause could be your in-car equipment. Do you have a sound system, phone charger or anything on when you try to start?

Edit: and as Foxy did, take your car to a reputable workshop such as RMS, MMS etc.... Subaru Service are generally pretty useless and charge too much! From my experience anyway....