Refunds are approved only if the certificate was revoked within 30 days of the issuance date. Symantec can process refund requests only after you revoke the certificates. Click here for instructions to revoke a Symantec certificate
After you revoke the certificate, send an e-mail to Billing department. Click here for contact details. Include:
Note: The billing department will reply to your request. Refund orders are processed only on the 15th and 30th. To read the refund policy, go to: https://www.symantec.com/content/en/us/about/media/repository/refund-policy.pdf