VMP REFUNDS - READ THIS

As stated HERE:

VMP REFUNDS: If you pay for VMP and at the end of the month find that
you want to cancel AND you have not used any of the benefits
(shipping, etc.) - you will automatically receive a refund of your VMP
fee for that month. The refund will take several days to appear on
your account. You do not have to contact anyone, as your refund is an
automatic service that applies if you qualify. (Free/bonus VMP items
from meh/mediocre do not count towards "use" of VMP.)

(current as of 2/27/15)