Welcome to the Community!
Are you using our TPG Mobile service or TPG Home phone bundled service?
We've created some articles that will help you troubleshoot this issue. Here are the links:
If you've recently port your number to TPG, then it may take 1 to 5 working days to finish for the incoming calls to work.
Feel free to search Community for help with your issue, or contact us and we'd be glad to assist you.