How do I cancel this crap so they can’t keep charging me for this worthless service?
Contact support.
( Assuming it’s for Elements )
https://help.elements.envato.com/hc/en-us/requests/new
You are always open to cancel your subscription service:
https://help.elements.envato.com/hc/en-us/articles/360000621563-Cancelling-Your-Subscription