I signed up for the 7 day free trial but was instantly charged for premium, causing me to have to work with Google to try to get my refund.

Hey! Chrys here one of the trainers at Hybrid!
Send an email to support@hybridcalisthenics.com
Let them know your order ID from Google and Hybrid will look on their end and see if they can request a refund! Sorry for the inconvenience!