I was billed during the free trial

Learn how to identify and address unexpected charges, check billing history, contact support, cancel subscription, and request refunds if needed.
This is likely related to a switch to a paid plan during your free trial.
If the subscription/plan is changed (repeatedly) in our dashboard after the initial start of the trial between different plans, then a charge will naturally occur.
As noted in our dashboard "Note that on changing your plan during the free trial the billing cycle for the new plan will start immediately."