This is probably because there was an overlap in time between your cancellation and the activation of the annual subscription.
Or another subscription was accidentally taken out under a different e-mail address that you no longer have on the screen.
Technical transmission errors can of course also be a cause.
In such cases, we will check your account and of course reverse the debits if the deadlines have been met.
Write us a short email to firstname.lastname@example.org and we will take care of the issue.