Hello, @belindahiti.
For QuickBooks Online Full Service Payroll, we process your employee's direct deposit paychecks on payday, at 7 AM PT. Check out this article for more details: Can I Cancel Direct Deposit Payments After it's Sent?
I'd recommend contacting our Payroll Support Team so you'll be assisted accurately in canceling your direct deposit. They have the tools to access your account securely and cancel the transaction on your behalf. Just provide your Company Id and the paycheck information to the agent who will assist you.
Let me know if you have other questions. I'm always here to help.