So you would recommend Optery? Some of the paid opt-out services seem to me to be essentially extortion schemes, want to make sure any service I use wouldn’t be like that.
But my solution to that is to use a burner credit card number! Specifically from privacy.com. I just make a new card with a limit of $20 to ensure it can't be billed again next month. I should of course just cancel the subscription, but if I forget they can't charge me next month anyway. I highly recommend privacy.com or other burner card services.
I haven’t used it yet, and it feels rough around the edges. I donated however and talked to their founder and I think this model fits better than a commercial one. The way it’s built you don’t actually share any data with them. They essentially provide templates to make erasure requests and follow-ups easier.