Understandable that you would be upset, but if it states you can't use them in the T&C's right on the certificate (as I presume it does based on the last post), then I don't think you have a leg to stand on... no matter what an employee may have stated. You should always read the T&C's on any deal and make sure you abide by them so there are no surprises. If they took them, great. Since they don't want to accept them, I'd ask what rate they have that you might use that doesn't require an ID, where you could use the checks and decide if that is appealing enough to use the checks... or save them for another time. Best of Luck.