If you would like to refund a payment from a previous billing period or on a closed contract, you have the ability to issue a refund for 180 days after the payment is received. Once you issue a refund, you can't reverse it, and your account will reflect the refund immediately.
To issue a refund
Go to My Jobs > All Contracts and click on the contract title.
Click on the 'Give a refund' from the (...) options menu
Choose the invoice to be refunded and click on 'Give Refund'
Thank you.