How do I cancel, modify, or update my checking account payment on the day (today) it was made to my Verizon account?

Question

This morning, after viewing my bank account status that indicated a little over 218 in my account, I made a payment on my Verizon account of 148.82. At the end of this initial payment to my Verizon account, I was told “You may cancel a checking account payment on the day it posts to your account. The amount will be reversed from your account balance.”
I revisited my bank account a little later, to see if this payment had been posted. It had not, but the current status had then changed due to an auto-payment on another account that I had forgotten about, leaving my account with a balance of only 116. I need to change or reverse my payment to Verizon and submit it for 110 until Tuesday of next week (03 June 2014).
I've called Verizon billing department, but have been unable to reach a representative due to the high volume of calls, and the call was disconnected. If I am unable to rectify this today, my payment to Verizon will cause charges to my bank account of $40.00 and a late fee to my Verizon account.
The on-line website does not have a provision for it that I can locate. How can I do this???
Thanks for the automated contact service that is not well thought out from the user perspective, for efficient customer or public use.  I find this to be most typically within most companies that provide an automated service for their clients.

Answer 1

Can I view and/or cancel a pending payment?Yes, to view and/or cancel a scheduled one-time payment:
Go to the Pay Bill page in My Verizon.
Click Scheduled Payment to view the pending payment on your account.
If you’d like to cancel the payment, follow the onscreen prompts to cancel it.
You’ve successfully canceled your payment.
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What if I need to stop a payment that has already been made?If you want to cancel a payment that has already been made, please contact your bank or credit card company to see if the payment or charge to your account can be stopped.
Note: If you made an online payment through your checking account, you may be able to cancel that payment online from the Payment History page in My Verizon.
Click on the Cancel link next to the payment, if one is available, and follow the onscreen prompts to cancel the payment.
If the link isn’t available, the payment isn’t eligible to be canceled online.The option to cancel is typically only available until midnight on the same day the payment was made.
From: Pay Bill FAQs | Verizon Wireless