Please see http://www.scamwatch.gov.au/content/index.phtml/tag/domainnamerenewalscams a great little website that will help you deal with notifications that all of us receive at some time or other - in the post, via email, over the telephone.
All notifcations about your domain name and hosting products can be verified if they carry our letter head or come from domains@oceania.com.au and if you are not sure just raise a support ticket or call us on 1300 301 990.
Oceania Team
Friday, December 13, 2013