Monthly4G, Auto-Pay and SMS notifications

I have the Monthly4G 100 minute plan and I have auto-pay enabled. Every month I receive the following sequence of SMS messages:

https://docs.google.com/file/d/0B7JYsch8bAzpblM5TndSeFRLM1E/edit

Is there any way to change the settings so that I don't get any of those?

Obviously I'd like to get notified if the payment actually wasn't made, e.g. if my credit card info was out-of-date.

Thanks!