If they are charging by direct debit or standing order then cancel them at you bank or online banking. If they are charging to your credit card then talk to the card issuer first to see if the recurring charge can be stopped and, if not, then ask your issuer to close the card account. I do not mean ask for a replacement card because the charge will carry over to the replacement. Then apply for a new credit card.
Samsung Galaxy Book 2: Release date, price and specs