moffat refridgerator about 10 years old?

My fridge starting showing signs of rusting on the door first. Looked something like a stain that certain spaghetti sauces will leave. Continued to spread,sometimes in patches like little freckles,then some in streaks. I talked to the retailer and their reply was that the gov't was promoting the use of recycled metals in appliance manufacturing and because I live near the salt water (I live on a small island) the humidity /salt water was accelerating the process. Has anyone else,American or Canadian had this problem?