I am on Talk Lite or did not use Talk this month, however, I was still charged $1 for usage?
The cost for the Talk Lite subscription is $0 per agent and Talk trials are at no cost. However, if you have an active phone number on the account you are charged each month based on the number.
When a free Suite trial is started, you are automatically assigned a Talk number for the trial period. If you plan on subscribing to Zendesk but do not wish to use Talk, you will need to remove the number to avoid the usage costs.
The price of a phone number depends upon the country from where it was purchased. For example, local numbers from US and Canada cost $1, while toll-free cost $2. For a full list of prices by country, see the article: Zendesk talk number availability and pricing.
If you want to delete your Talk number and not receive this monthly charge, see the article: Managing Zendesk Talk numbers.