The first reschedule is always free, and can be done up to 48 hours before the originally scheduled time. Additional reschedules require a fee of 15 USD for each reschedule.
Likewise, cancellation is free up to 48 hours before the scheduled slot. Please reach out to firstname.lastname@example.org for any refund related requests.
PS - For all refunds initiated by you, we issue the entire invoice amount minus PayPal's transfer fees (which are usually ~5% of the transaction value). If a refund occurs because of something going at our end, we bear PayPal's transfer fees on ourselves.