Welcome to the Community!
I've managed to locate the account and checked your current plan.
The service includes the following monthly Included Value for use within Australia:
• 14GB Included Data
• Unlimited Calls, SMS & MMS to Standard Australian Numbers (includes 13/1300)
How long have you been experiencing this issue? I would recommend checking out this article to assist you in performing basic troubleshooting: Troubleshooting issues with your TPG Mobile service
If the issue still persists, let us know of your most convenient time to receive a call so we can have a member of our Mobile support team to contact and assist you.
I was having this issue for the last 3 days and could only send messages using apple network (blue messages) but miraculously it appears to have been fixed and I can resend the messages which I could not earlier. I was not able to call local number nor send any messages for the last 3 days.
Maybe there was an outage which got fixed.
My problem has not been resolved yet.I cannot send any more messages and I cannot connect to the internet again. The problem started again. If it's not resolved, I will have to cancel my subscription as I'm not even a month into the plan.
We apologise for the inconvenience this issue is causing you and we are sorry to know that you are considering changing provider. We have raised your concern to our Mobile Team and one of our mobile specialists will contact you to address the matter.
Kindly await a call today.
If you have a preferred contact number and time, please send it via PM. Thank you.