@SimplyDan Welcome to this thread.
I can help you find where this payment is.
If your customer paid an invoice via ACH on a Saturday and you do not see funds deposited to your bank account by Monday, I would advise to first check the Merchant Service Center to confirm when the payment was made, and make sure your expected deposit date is correct.
If it has been longer than 5 business days since the payment processed, check your emails to see if an alert may have been sent in regards to the payment.
If the payment went under review, there could be further action to take to get the funds deposited.
If you don't see anything that would cause a delay, contact payments support. An agent can help locate the payment and give you more information. This link will take you to the QuickBooks support page, where you can select your service and the proper contact channel: Contact Support
Let me know if you have additional questions.
