Appalling service

Ever since I started using this company for fibre I have never had a pleasant experience with them, I signed up for 20/10 mbps out of one of their clueless consultant and it’s simply because I use it to stream with a tv n a connection of my phone but mostly I’m not getting the speed I’m pay for n I have raised this for months but nothing good came out of that. I requested to talk to superiors, none of that has happened. I’m not sure whether they are clueless as the rest of the staff of just plain idiots but I’m not happy at lo with their service…