Indeed, it is possible to cancel online bill payments, @Belinda_OIW. 

However, before I guide you through the cancellation process, let's make sure that you are within the appropriate timeframe. 

• A bill payment, created through Bill Pay powered by Bill.com before 3 PM PT, can be canceled until 4 PM PT on the banking day before the Process Date.
• A bill payment, created through Bill Pay powered by Bill.com after 3 PM PT, can be canceled until 6 PM PT on the banking day before the Process Date.

If you're sure that you're in the correct timeframe, you can now proceed to cancel. Let me guide you through the process for a seamless experience:
 

1. In your QuickBooks Online (QBO) account, go to the Get paid & pay tab.
2. Click Vendors (Take me there), then Pay bills online.
3. Select the Sent payments tab.
4. Locate the desired payment.
5. Select Track status on the desired payment.
6. Click Cancel Payment.
7. You'll be asked if you're sure you want to cancel the payment. Select Yes to confirm.

For detailed information, kindly visit: Overview of Bill Pay powered by Bill.com
 

Additionally, it might be beneficial for you to take a look at this article, which provides information on the application of vendor credits in Online Bill Pay, which is powered by Bill.com: Applying vendor credits with Bill Pay powered by Bill.com.
 

Keep me posted if you have additional questions about expenses, running reports, or other QuickBooks-related matters. I'm available around the clock and ready to provide assistance.