thawte's refund policy is contained in the thawte Certification Practice Statement 2.2 Section 2.5.5 Refund Policy which states:

If you cancel a Certificate request before the Certificate has been issued, thawte will refund you any amount paid, less an administration fee of 10% if documents have been received and work has been performed on the Certificate Application. To request a refund, please e-mail billing@thawte.com

After A Certificate Has Been Issued

If you cancel a certificate after it has been issued and you believe that you have grounds to request a refund, you must request such a refund from the thawte account manager allocated to your Certificate Application. Grounds for such a refund would be:

i) Technical problems due to an error on our system, where the thawte Technical Support team has been unable to rectify the situation.

ii) If the reason for the cancellation or revocation is due to thawte breaching a warranty or other material obligation under this Agreement, or the thawte CPS, then you will be entitled to a full refund of the Certificate fees paid to thawte . Alternatively you may choose to receive a new Certificate at no charge. All refunds must be authorized by the thawte Certificate Order Processing Manager, or Technical Support Manager.

Please note that the certificate for which the refund was requested, will be revoked.