As it is mentioned on the payment page as well that this is one time non-refundable fee and all the payment well only be processed after the completion of work-order or once the services are rendered. So within 7 days if you think, the work order was not completed as per your satisfaction or else if you have any complaint regarding the services then only you will be entitled to get a full refund.
# Note: Your credit/debit card statement will show charged appeared by the name of MWS Professional