Dell's Return Policy

I bought a defective Magellan GPS from Dell online. Well, their return policy is that the item must be returned in 21 days. So they refer me to the manufacturer, who says of course that the warranty does not cover the screen of their GPS (Magellan). So I am stuck with this GPS with a defective screen. Thanks a lot, Dell and Magellan. You won't be seeing any more of my money.