I donated to a cause I believed in. Did not sign up for recurring monthly payments. Followed instructions on how to cancel. Went to settings + membership. Membership tab says I need to contribute to join. I'm already a "member!" I emailed several times, first time I got a "catch all" do not repy another time they emailed me back the original email they sent me thanking me for donation. I even called the Change.org telephone number that was listed on my credit card statement. Of course a voicemail saying you can't leave a message. I ended up contacting my credit card company to put a stop to unauthorized monthly recurring payments.