I want to cancel the payment method

Glad to have you here in the Community, @ding76.

I'd like to help you with your concern about canceling the payment method by sharing possible scenarios I could think of.

Are you referring to your subscription payment method? If so, you can cancel it by changing it. To do so, you can follow the steps below:

1. Sign in to your QuickBooks Online (QBO) account.
2. Click the Gear icon, then select Account and Settings.
3. Go to the Billing & Subscription menu.
4. Next to your payment method, select the pencil ✎ icon to edit.
5. Select your preferred payment method and enter the necessary details.
6. When you're done, click Save and use.

I'm adding this article for more guidance: Update or change your payment method.

However, if you're referring to the invoice payment method, you can turn it off from the Sales menu. Here's how:

1. Click the Gear icon, then select Account and Settings.
2. Select Sales from the left menu.
3. Go to the Invoice payments section, then uncheck the Accept Credit Cards payment option.
4. Click Save, then Done.

Just in case you want to learn more about recording invoice payments in QBO, you can also check out this article: Record invoice payments in QuickBooks Online.

Please know that the Community forum is always open to help you again if you're referring to something else. Have a good one.