Hi @Milena, we appreciate your effort in taking the time to troubleshoot and we apologise for the inconvenience this issue has caused you.
We understand the need for a working service, thus we are here to help.
We normally advise our customers to check if there's an outage affecting the service first. We list all known outages on our Service Status page.
If you're on NBN, we have created this article that can guide you on How to Check for NBN Network Outage
If there are no known outages in the area, customers can proceed with the troubleshooting steps indicated on this link : Troubleshooting No Internet Connection
If you have performed all the troubleshooting on the link above, we will need to further check what is causing the issue.
We have PM'd you and please reply with your TPG account details so we can help get to the bottom of this.
You may also chat with us at https://www.tpg.com.au/support/contact/ and we'd be glad to assist you.