Hi @Anonymous User
It used to be a 10p credit check on your bank card provided, but the money was refunded straight away.
Where it looks like it's a £1 card check now (according to this linked NowTV article) but again the money should be automatically refunded.
Maybe double check with your bank statement or with your bank.
If not you need to get in touch with NowTV live chat.
https://help.nowtv.com/article/why-wasnt-my-payment-authorised