I know this has been challenging on your part for quite some time.

On top of that, we appreciate your effort in connecting with our support and being able to create a ticket to find a fix for your customer's payment account info.

However, we recommend contacting QuickBooks Merchant Support again, to acquire updates to your ticket. Moreover, they have the complete resources to pull up your account in a safe environment. 

You might want to check when QuickBooks deposits customer payments into your bank account. You can read this article: Find out when QuickBooks Payments deposits customer payments.

For additional questions about managing your customer payment info, don't hesitate to reply to this post. I'll here willing to assist you.