I was charged after cancelling, what now?

Quick timing note: to avoid being charged for the next cycle, cancel at least 24 hours before your scheduled renewal (Apple's rule, and a safe rule for the website too). If you cancelled inside that window, the renewal was already queued and will go through.

1. You cancelled, but the charge happened before your cycle ended. This is normal, you keep access until the end of the period you've already paid for; the charge may be from before you cancelled and showed up late on your statement.
2. You deleted the app, but your subscription is still active. Deleting the app doesn't cancel your subscription. Fix: follow how to cancel, then request a refund through Apple or Google for the most recent charge.
3. You cancelled correctly, but were still charged (rare). Fix: start a chat and include your registered email, a screenshot of your cancellation confirmation, and the date and amount of the unexpected charge. We'll process the refund within 24 hours.