I had fibre installed last week the first 5 days or so I was getting a nice stable connection of 70mb - 73mb download and even at some points getting the full 76mb download good pings everything going sweet
Firstly: What is your sync speed?
Secondly: Read and understand this. In the budget broadband market, companies provide a helpdesk because they have to. The poor customer service on all the major ISPs is deliberate - it's aimed to be so bad you exhaust all other options first, but not quite so bad that you take your wallet elsewhere.
I had enough and jumped ship a few months back. Ironically the new provider I'm with uses TT LLU, but the level of customer service I get is a different Universe from what you'd see with TT. It costs £5/month more but IMO it's worth that much to be able to speak directly to someone who's not constrained by scripts and has a few clues about what's actually going on.
Even with them, there's still BTOR to contend with and getting VDSL2 installed took 8 attempts, including ones where a voice or DSL faultmen were sent "We're not certified to do VDSL installs!", noone showed up but the job was marked as completed anyway and one where an installer showed up, just not at my location(we proved that by checking CCTV footage for the times he claimed to be hammering on the door and offering to provide footage to the ISP. Thankfully the new provider was able to escalate and get an installer rebooked for the next day on almost every occasion, vs TT's "Oh you have to wait 2 weeks for the next booking slot"
What's utterly clear is that BT's internal systems are completely unfit for purpose, however this affects external clients more than BT retail so they don't give a flying fig.
Good, fast, cheap:. Pick any 2.
Do you want to stop spam, or do you just want to stop receiving it?