I had was a nowtv broadband customer and my internet worked fine, then about three months ago it kept going on and off throughout the day and was extremely slow - not even usable. I had many engineers come out and tell me nothing was wrong and that the problem must be at nowtv.
After a very long process, I left nowtv and switched providers - solved my problem straight away. The very day my new router with new provider was set up my internet has been extremely fast with no outages.
i just thought I’d write this to save any people the hassle I went through.