Most bike angels earn points toward free membership so we don't even think about being charged. We earn 80 points at the beginning of each month for a four week extension = 48 weeks per year, so we only get billed every few years when the 52 months outpace the 48 revolving weeks toward our extension. If you have a credit card attached to your account it renews your membership automatically. You do not pay for the individual rides. So, perhaps you turned off the automatic renewal on your account or your credit card had an issue or something like that.