My ISP loves me and hates me. I have a python script (which this week I retired for NR flow) that captures the entire state of the modem, logs, statistics, etc., it all gets dropped into a maria DB instance. For about 10 years, I have had to prove various times, that my ISP is doing some odd things, that my local AMP was failing, that the wiring (external to my house) trunk line was failing, etc. The average tech for ISP would come out, do a spot check, declare that I was smoking the coax cable insulation, and claim the issue was resolved and leave. Well of course it was not fixed. Hence I collect the data, and proved the trending evidence... which can be done if you have the data, and get a tech that will listen.
About 2 years ago, a very good tech happened to answer an issue call I made, he told me flat out, I was 'known' to the local ISP tech team as 'trouble' maker, and because I am an IT guy and an avid online gamer, I was always griping about something. I challenged him, and pulled my data. I asked him to look at the down and up signal strength, channel jumps, noise ratios, line resets, etc.
After a few minutes, he said he would be back. Wow, what a difference, he replaced the AMP, he line balanced the signal loading so the cable modem had appropriate leveling, and the modem was no longer screaming back at the ISP because of the significant uncorrectable codeword errors, and of course noise ratio was insane.
While he watched, the number of line resets continued however, as everything else improved with each change he did. Then he walked down the street and opened the local hub junction, and in seconds was in his van, grabbing a spool of coax, and additional tools. In short, he told me the local hub had several damaged terminations, including mine, and because he knew I was a gamer, changed to order of connections in the hub, so I was inline first on the given bus line, in short I get bandwidth before any of my other 7 neighbors... Don't tell them I know this. Even the odd pixelation on my various TVs improved as he validated the new AMP configuration.
I know this is a long story or comment, but it was what he said as he left, that really nailed this entire visit in my memory... "And you'd show this collection of data to other techs that came before?" I replied "I tried." He picked up his tools, told me to call him directly if there were any issues, and as he walked away, said, I am sure just loud enough for me to here, one word, "Idiots."