Steps to download a payment receipt as a PDF:

1. Sign in to the web app at invoiced.com.

2. Go to the Payments section in the left sidebar of the app.

3. Find the payment you want to download and open its details by clicking on it.

4. Click the Refund button in the top right.

5. Select whether you want to refund the full amount or a partial amount.

6. Click Refund to initiate the refund. Your refund will be processed immediately but please note that it may take up to 5 business days to show up on your customer's bank statement.

The invoice and customer balances will be updated immediately to reflect the refund.