Hi, can I refund the subscription? It was mistakenly subscribe & the owner of the bank account didn't consent in using the card to register. Really sorry for this.
If you send a ticket here www.fakku.net/contact you should be able to get a refund, though I guess it has to be within 7 days.
https://www.fakku.net/support/billing/what-is-your-refund-policy