Here's their followup response:
"Our users can limit access to the account for certain users and we are not able to influence their decision.
Unfortunately, the corresponding transaction cannot be refunded according to our
Terms of Service. Also, please review the Standard Contract between Fan and Creator and draw your attention to the 8. Expiry of license section -
https://onlyfans.com/contract. It explains that if any content gets removed after it has been successfully accessed and viewed, the license to view it expires."
Apparently they're saying that as long as you successfully view the content one single time, then the contract is fulfilled and you have no more rights. Kinda bullshit but not a huge deal, I was just trying to see if I could get refunds with your method. Thanks for the tips anyway!