We apologise for the inconvenience this issue is causing you and we're sorry to know that you're considering changing provider.
We take a genuine interest to all our customer feedback and we'll make sure that yours will be taken into account.
For customers experiencing any issues with their NBN service, we normally advise to check first if there's any known outage affecting the NBN network and we have created this article about How to Check for NBN Network Outage
If there are no known outages, customers can proceed with the troubleshooting steps indicated on this link : https://www.tpg.com.au/support/nbn-hfc-cable/problems_connect_internet_nbn_hfc
You are correct that there's no outage affecting the service at the moment. What we have identified is an issue with the line, thus an NBN technician has been booked to fix this.
Dont think its just Adelaide mate, down in Melbourne (ferntree gully) its pretty rubbish too. I usually rely on the internet connection later at night and low and behold, half the night I'm fondling the router. Pretty rubbish customer service as nobody could figure out the issue, just the usual turn it off and back on. The little money saved with TPG is pointless if their internet is inconsistent with multiple dropouts a day. Anyway I'll be moving to another provider, put up with this too long!