Saab 9-2X Lighting problems by year

The exterior lights have to be replaced on a constant basis. One headlight would go out soon as you fix it the other headlight would go out. However now the issue has become where when I leave to go drive somewhere at night my lights don't even come on at all and I'm forced to have to use my brights in order to drive home. At first it was just a bothersome thing but hand a little bit annoying to keep having to replace the light bulbs. Now it's no longer and annoyance, it has become a safety issue and also possibly...

Driving lights will go out at unknowing times. Received 1st letter from gm a safety recall stating that my saab had a defect relating to head lamps and running lamps could fail. Set up appointment with gm repair shop to have problem resolved. They said that my vehicle wasn't included in the recall . Received 2nd letter from gm stating that my saab is not included on recall, as recalls were sent out to resolve this problem. Letter I received from gm states my vehicle has high intensity discharge [hid] headlamps. Then why do my headlights go out at any time. This is a safety hazard for night driving. Any help with this matter would be greatly appreciated. *Tr