Mesa, Tempe and Phoenix people, I need some help.

This is a little off topic, but I need to find a good place to have my alarm fixed or replaced. I think it crapped out on me. It wont arm, but when my doors are open for too long it gives me three loud churps that are annoying as hell. Its done it ever since I've had the car, just been too lazy to change. Any help appreciated. Oh ya, it's a Code Alarm.