thecatsgoolies:
When I worked in tech support for Vodafone years ago. JohnR would often go and assist customers with issues not relating to network, but often device issues or PC issues. Glad he fixed it for you and found the cause.
When it was IHUG, I did that a few times as well, especially with the IHUG Ultra customers.... was just easier to go to their house if it was near where I was staying, and fix it in 2mins than fight over the phone with them for an hour trying to get them to find the Ctrl key.... ;)