Funny you should use this example, because it was precisely this experience that convinced me to never bother calling anyone for tech support.
Years ago, I was a customer of Earthlink DSL. One evening, the Internet went out almost exactly at 1:00am. The modem lights were all on and looking good, but no packets were going anywhere.
I called tech support. The person insisted that I run through 40 minutes of troubleshooting (power cycle the computer, update Windows, disconnect my router and talk directly to the modem, etc.) before escalating the problem to tier 2. Then the tier 2 person made be perform all of the exact same steps a second time (apparently the report from the tier 1 person wasn’t good enough) before finally opening a trouble ticket. At this point it was approaching 3:00am - I was on the phone for over 90 minutes.
I went to bed and found everything up and running fine in the morning. I then checked Earthlink’s system status to learn that this was a scheduled outage for some kind of line maintenance.
Oh, and they never called me back to tell me anything. I assume somebody closed the ticket at some point, but I never got any notification of that either.
At which point, I decided that my personal policy (at least with regard to Internet services) is that if there’s a failure, they have 24 hours to fix it. If they don’t fix it on their own after that, I’m cancelling my subscription. I’m never going to waste my time dealing with incompetent tech support ever again.