Oh man, a lot of the local tradesmen practice the "no schedule" thing. Drives me crazy. "Can you come fix my electrics" "Sorry, busy right now, call me in a month". No dude, I will call someone who can actually give me an appointment in a month - I'm not going to keep calling you like a stalker.
In other words this is a great strategy if you are trying to turn away business (which for people with too much business may be an advantage I suppose) but it's kinda rude.
I think as a hacker you may enjoy working on electric systems. So why not do it yourself ? The tools will cost you about the same price as a single repairman-call. The process of searching for an insulation fault is very debugging-like - they both use the scientific method after all. And electrical engineers are the original hackers!
Of course, hope you know the safety rules, would not want you to get hurt. Encouragement void where forbidden by local law :)
The spirit is willing, but the flesh is weak. I am the clumsiest person this side of the Magellanic cloud. You should see me fumble with paint - you wouldn't want me to mess with electrics :-)
In other words this is a great strategy if you are trying to turn away business (which for people with too much business may be an advantage I suppose) but it's kinda rude.