Signed me up for a subscription I didn’t agree to – Private Texting SMS Phone Line Review

I AM LIVID!! I made a ONE TIME purchase on this app for a cute secret Santa event and it signed me up for a subscription and they have taken $48 for me and could’ve taken more. While some many say “isn’t that your fault for not seeing it,” Apple grouped the amount it was charging me with my subscription to another app and I didn’t notice it until today when I made a larger purchase. Apple says I am not eligible for a refund and I’m absolutely livid. If someone knows how to fix this and get me a refund please help.
Review by bcosgvtelc on Private Texting SMS Phone Line.