I appreciate you bringing this matter to our attention, @stacybr. Protecting our customers' privacy is a top priority for us, allow me to clarify this matter to you. 

Currently, we do not offer the option to delete credit card information here in QuickBooks Online. However, we value your feedback and recommend sharing your suggestion directly with our Product Development Team. Customer input is crucial in shaping future QuickBooks updates.

Here’s how to do it:

1. Go to the Gear icon. Located at the upper right corner of the screen.

2. Select Feedback.

3. Let us know your thoughts.

4. Click Next to send your input.

Let me add an article for you, just in case you want to set up and edit or disable credit card in QuickBooks Online: Add, edit, or disable a credit card.

I'm still ready to help you out in managing credit cards in QuickBooks Online. Just click Reply below and we'll circle back to you.