Greetings, @SandwichMgt,
QuickBooks Online UK is currently supporting GoCardless to collect payments directly from the customer's bank account. You can go visit this link: https://appcenter.intuit.com/app/apps/appdetails?shortName=gocardless&locale=en-gb, then go to the Pricing tab to see the fees.
You can also use this link to look for another payment method that can be integrated with QuickBooks. This is to ensure you get your invoices paid automatically.
I've added this article to learn more about GoCardless: GoCardless Direct Debit for QuickBooks. This article provides answers to frequently asked questions about the use of this Direct Debit.
I'd also appreciate if you can tell me the name of the card your customer is using so I can provide the information you need. Just leave a comment below and I'll get back to you.