Welcome to the Community!
Thanks for raising this with us. I can only imagine how frustrating this has been for you.
I checked your connection history and it does show massive dropouts. However, the tests I performed points to a possible premise issue. We need to perform another test without any devices connected to a phone socket to determine if this is an internal wiring or equipment problem.
I have organized for our Technical Team to call you tomorrow (April 4) between 1PM - 2PM VIC time so we can perform the required tests while on the phone. I have provided the mobile number we have on file. If you wish to provide a different contact number and/or preferred time for a call, send us a PM.
How to PM? Visit this link.
Our Engineering Team has raised this issue to Telstra further since the TPG technician who attended today's appointment found out a line fault in the end.
Please refer to the SMS that was sent advising you as to when Telstra can check your line. Updates pertaining to the outcome of the Telstra visit will be provided to you directly by our Engineering Team.
If you have other concerns, feel free to leave a message.