If you are stuck with something, and looking for support, here's what you can do:
We have Support page in the top menu which gives you a few methods to troubleshoot any issues you come across with your Portal Experience or API usage: https://dev.telstra.com/support
The first point for support is checking out our FAQs: https://dev.telstra.com/support/frequently-asked-questions
Each API has their own set of FAQs built into the documentations
Next, see if your problem has been solved in a previous forum post: https://dev.telstra.com/forum . You can go to the particular forum channel (e.g Messaging API: https://dev.telstra.com/forums/messaging-api-forum) or do a site search to find your key words.
You can do as you have done today and post a new forum to get other developers to help, and the TelstraDev support team monitors these forums.
There are also some tutorials in our blogs for more complex questions: https://dev.telstra.com/blog/tutorials
If all else fails please send us an email at firstname.lastname@example.org. There is also a dedicated support number on the Support Page.
Hope that helps! The forums are here 24/7 and we'll get back to you as soon as possible.