As far as I'm concerned... the Purchase is made when they charge the money... they committed to the $559 price with me, and cannot go back on that.
They will honor that price(or they'll get the device back and lose a long time customer FOREVER), and the rebate has nothing to do with them.

Nokia doesn't care how much you paid for the phone... They've already been paid whatever price by Amazon for purchasing the phone from them wholesale... what amazon charges is irrelevant to Nokia.