Volume commitments and deals: are you tracking them properly?

Many carrier deals include commitments like minimum monthly minutes or tiered pricing. Miss a commitment and you pay a penalty; exceed a tier and you leave a discount unclaimed.

At minimum, track: commitment amount, current usage, days left in the period, and projected end-of-period total. A walkthrough on deal management shows what to monitor. Do you have a system for it, or is it a spreadsheet?