Be careful of letters being sent directly to you by a company called Domain Name Group Pty Ltd.
This company sends bogus domain renewal “invoices” to existing domain owners. In most cases the invoice is for a domain that you don’t currently have but is a close match (eg they try selling the .net.au if you have the .com.au or perhaps a misspelled domain).
We warn all clients that they should not pay any attention to letters sent to them by this company – Domain Name Group Pty Ltd.
If you may have been duped by this company, please refer to this ACCC Scam Watch – http://www.scamwatch.gov.au/content/index.phtml/tag/domainnamerenewalscams