I was double charged for an app, the second time within 90 days, but now way to get help.

So I use Lumosity that charges $60 for an annual subscription. It was working, then stopped. I deleted and re-downloaded and a short time later it took away my premium services, as though my subscription had expired. Confused, I bought again thinking it had expired but then realized later it double charged me, so now I have two concurrent subscriptions for the same service. This is clearly a glitch since this should not be possible. I contacted Lumosity who was completely useless saying I needed to follow up with Apple, even provided a dead link on a FAQ on what to do regarding refunds.

So, Apple has a 90 days "report a problem" (this second purchase was 89 days ago), but the app does not show up in my recent purchases list that I could "Report a Problem" I think because the original app purchase was over 90 days ago, so a nice little Catch 22. Anyone have suggestions?