Still inexcusable, especially as an educator. Here's what I would of done:
"Oh you can't connect to the internet? Watch this. See the little icon at the top that looks like ripples going up? This one? That's the hub for any wireless networking connection - just click it and pick an option. Each of those options is a network to connect to. The ones with little locks next to them means you need a password to connect. If you're ever having internet problems on your laptop, just check this icon out and see if you're connected." Then fix the situation for them. You still offered a solution, and they'll probably never come to you for help with that again - and whenever they hear a friend, they'll repeat it. It's really not complicated to explain AND fix the problem at the same time.
What if I told you that you were wrong in doing so?
There is a reason such jobs turn people into curmudgeons. It's not like they all started that way. You attempt to give a simple explanation as to what you're doing, but as soon as you say anything about their computer, they assume it's technical and tune out.
There are definitely people that would come into the office and learn how you fixed things, and those people were wonderful. Few and far between, though.
In none of these instances did anyone attempt to seek out knowledge. They were looking for a solution. If they had said "how do I [get on the network|reinstall the OS|rip this file off YouTube]?" then it would be a lot easier for me to dismiss him as a curmudgeonly holier-than-thou IT guy.
I know plenty of people (and I even like some of them as people) who intentionally do not learn to do things on the computer because then they can't ask me to do it for them. When I like these people I make a subversive effort to teach them anyways, otherwise I just get it done for them to get them away from me, feelings be damned. Actual computer literacy (not MS Office literacy) is actually a necessary skill today in almost every office job. Knowing how to program? Probably not. Knowing how to connect to a network? Probably.
Finally, it is so damned easy now to google something, that much of the described behavior is inexcusable. Oh, but your problem is connecting to the internet? It sure would be helpful if you had a small computer in your pocket that could independently connect to the internet over some infrastructure that wasn't dependent on your local network, bummer. </rant>
But seriously we should actually be concerned about this and I hope that education does get better on this. I do fear that interfaces are almost too rich, meaning that it takes a concerted effort to "really" use a computer, unlike in even the recent past where you were forced to. Many people who were accidentally exposed to the more in depth aspect of computing and found it interesting would not have sought it out on their own, meaning that as a community we are losing out on that category of people going forward.