How do you cancel your Greenpeace membership?

If, for any reason, you decide to suspend your monthly membership, you may do so at any time by submitting your request in writing to: Supporter Services, Greenpeace, 702 H St. NW, Washington, DC 20001 or by calling 1-800-722-6995, and that Greenpeace has a reasonable period to fulfill your request. Call hours are from 9:00 am - 5:00 pm