rust on doors

After a couple of months we got rust on doors whirlpool said it was cosmetic..they came out to house at least 5 times for doors and other problems..I called and complained and got lowes to,send some used doors now months later these are rusting too..Im now under extended warranty they say to call whirlpool back because the doors are to much to replace so I call whirlpool they say there Is nothing they can do..we paid almost 3,000 dollars for a piece of crap because we wanted to buy American and whirlpool name you can't go wront...NOT NO MOTE WE WILL NEVER BUY WHIRLPOOL AGAIN..I will fight fight fight to either get our money back or make sure everybody hears about this..thank Denise