You should have received an email from support@gpsoft.com.au with a subject line that reads Acknowledgement of Directory Opus Support Request. Perhaps your spam filter ate it? The text reads..
[b]Dear XXX,
This message is to inform you that we have received your recent technical support request for Directory Opus.
Your tracking number for this issue is 123456789012. You should quote this number in any further correspondence relating to this support issue.
We will endeavour to respond to your request as quickly as possible.[/b]
Regards, AB