Good day. Sharonmgum,
For this situation, it will be best to contact the agency to cancel this e-payment. The reason for this is because some e-payments are transmitted to the agency instantly. If yours is scheduled for two business days in advance, our support team may be able to cancel it. Here's how to contact them:
1. Select F1 or the Help menu.
2. Select the Contact Us option.
3. Enter a brief description.
4. Choose the Call me Back feature.
For more information about the cancellation of tax payments and forms, I recommended this article. Please let me know if you need additional help.