Internet keeps dropping out

Hi. I'm new here and this is my first post.

So, I've been with Telstra for about 3 years now. For some reason, my internet started dropping out on me last week. I ran the internet troubleshooter and all it gave me was a reference number. I went on Telstra LiveChat, but then it dropped out on me .

Here are my details:

Reference: 18-17726

Technicolor TG797n v3

Ethernet, Wireless, WAN and Internet lights all solid green.

Internet light goes red when it dropps out.

I did an Isolation test and I had a faulty filter, replaced that, but it still drops out. Now it's connected directly to the wall.

I have a dial tone.

Plz help!