Payment gateways (paypal, apple, google), in general, do NOT let you cancel individual services and are linked to your CC. Vendors (I'm looking at you, Audible!) constantly hide their account termination under layers of dark patterns. For awhile, I had several ghost subscriptions that I a.) didn't want and b.) couldn't cancel.
My credit card card [1] has fundamentally changed my online purchasing experience as it bridges what I feel is a gap between new payment methods (Apple, Google, et al) and classic payment methods (CC).
An ounce of prevention is worth a pound of cure.
When I purchase something line, I create a new one-time card (three taps on my phone) and use that new, valid CC for purchasing. Everybody takes a CC. The card is instantly deleted after purchase, and I don't have to worry about my paypal account, apple pay account, google wallet account, ghost subs, account hacks, identity theft -- the works.