Paying bill with customer balance

Create a Bank Account called Transfer A/R & A/P
Enter the Bill in the Enter Bills Screen
Use the Pay Bills & at the bottom use the New Transfer Account you created. Enter the amount paid.
Customer Center > Receive Payments Screen. Enter what they are deducting > make sure it goes to Undeposited funds
Make a deposit > Deposit the amount into the Transfer A/R & A/P account.
This will zero out the account.

Hope this helps. If so please mark solved, if not please ask more questions. Thanks!