To make a long story short if you just received the card and have not yet started using it, then you can call 1-888-872-8539 , press - enter your card details and press option 5 and then option 0. Ask for corporate division (since the rebates are from Canon corporate). Then let them know they you would like a check mailed to you in lieu of the card. They will check and verify that Canon does allow a check to be mailed for this program. Wait for the claim number (write it down for tracking purposes).
That's it. I just exchanged my rebate card for a check.
If this is already posted somewhere please delete this thread,