Don't worry, they won't renew your contract... I wouldn't try to argue to a TP, I would just call up and say that after you completed the form you looked online and saw that the 6950 phone (if that is how it is listed on the fulfillment page, or diamond if it actually says diamond) doesn't have an SD card slot and is there anything else they have they could send....
You don't want to sound like you are just trying to upgrade using insurance, as thats not what its for.... so even if you *are* upgrading using your insurance, try not to be too obvious