Originally Posted by 3ZeroT

The key piece of info you need is the checkfree reference number - if you can't access the receipt and paid in the app, you should have also got an e-mail that contains this information. Worst case, call checkfree and they may be able to look up the payment by biller and account#. Once you have the checkfree reference # for the payment (and assuming checkfree customer service sees the payment as rejected and it's been returned to WM), the process to get a refund in-store is pretty straightforward. Have the store call checkfree if they need instructions.