We're having a little pain dealing with children (we're guessing) putting in invalid credit card numbers. I wouldn't really mind much but it sends us the orders/subscriptions which we then have to delete manually.

I don't think there's a way to avoid getting the order, but does anyone know of anything we can do to these people? I basically just want to send some sort of threatening email letting them know we see what they are doing and they "could" get in trouble.

Does anyone have this problem, and if so, how do you deal with it?

This is a serious pain () so thank you for any help/ideas you may have!