Verizon has a tool online to estimate your fees for a given zip code. It’s hilariously broken - like it will return a list of the same city and county taxes listed dozens of times. It’s completely unusable. But as other posters have noted, it somehow doesn’t stop them from calculating and charging those fees every month.
At the very least the support agent didn't try to run a calculation, and cause a phantom bill you'd never know about until you get a call from collections or discover a lien on your house.