I'd say the more intelligent way to head any of this off is to create billing alerts which you can now do and set it to page / email / post to an endpoint when

I'd say the more intelligent way to head any of this off is to create billing alerts which you can now do and set it to page / email / post to an endpoint when you reach $X or X% of whatever worries you. Create tiers of things that email / SMS additional people as the numbers go up if you want to be very careful etc...