If you have received an automatic refund (see here) you will have received a credit note back in your PPH Account so that you can re-use the funds to buy other services on PPH. Please note: unlike refunds that you have requested or that your Seller has issued to you; these automatically refunded amounts can't be withdrawn from your PPH Account, however, they have no expiry date and can be used for your next hire on PPH.
To use the credit note funds again: whenever you go to pay an invoice, or pay a deposit request for a custom proposal or purchase an Hourlie, simply select "PPH Account" as your payment method. See the example below. That's it!