I can see how important for your business to process payments seamlessly, doctorfizzix.
Based on the situation, I recommend to coordinate with your vendor and inform them to reach out to our QuickBooks Payments Team. This is to verify if there's an issue with your vendor's bank.
You can go over the following links again to learn more about how to troubleshoot rejected payments or fees:
Furthermore, the following resource contains a list of topics that will assist you with payment-related activities: QuickBooks Payments FAQ.
Feel free to visit the Community again if you have other payment concerns or questions about QuickBooks. I'm always ready to assist you further.
