Color me naive, but in the case of voluntary payments such as charitable contributions, wouldn't full and fair disclosure demand that you be advised that you're entering into an irrevocable, by you, anyhow, agreement before you click "OK"?
You'd think so but I've never seen such a disclosure. You'd also think that the person who giveth the authorization should also be the person who taketh it away. I assume that's the way it works with a bank account. Hmmmm.....perhaps it's time to check.
I have very few auto-charges against my credit cards....limiting them to a couple of utilities. With monthly payment options,like charities, I just opt for a single one-time lump sum.