Toll free number usage and charges

When I signed up for a Zoom Phone plan with unlimited calls, I assumed there would be no concerns about minute usage. Additionally, when I subscribed to the $5 per month toll-free number linked to my Zoom Phone, there was no indication that the toll-free number had a minute usage limit.

I only became aware of this when I received a separate email stating that 95% of the allotted minutes had been used. However, I was never informed of how many minutes were included or what this 95% usage was based on. Without prior notice, my credit card was automatically charged.

Now, when I try to check my toll-free usage summary by asking the Zoom bot for help, it instructs me to "locate the toll-free licenses section to view the available toll-free minutes." However, I cannot find this section, nor does the bot provide clear directions on where to check my usage.

Can someone please assist me? I feel like I’m being charged for something without any clear breakdown of what I’m paying for.