If it's your refrigerator seals that need replacing, then Aussie Fridge Seals online ordering service is fantastic. They have parts for just about every fridge invented and saved mine. Replacing the seal myself was easy - a screwdriver was all I needed: http://www.aussiefridgeseals.com.au
For the fridge that needs more attention, Abbotts Refrigeration are the people to call. They have no call out fee and will call when they're on their way. Excellent service.