I've got a subscription to the Financial Times that I'm starting to fall behind on. I'd like to cancel my monthly subscription (due on the 17th of every month), and just purchase individual issues on an ad-hoc basis. I'm paid up through the 17th and, just discovered on the Amazon site that if I cancel today, I won't receive the final two weeks I've already paid for. Normally, I'd just wait 'till the night of the 16th and cancel, but in this case, I'll be out visiting potential colleges with my son and unable to act. How can I get Amazon to just stop renewing my subscription at the end of my term (the issue on the 16th would be my last)?