Politely inform them that you're not looking right now. Ask them to e-mail you a job description so that if you happen across anyone who meets the requirements, you can put them in touch.
There's no need to go nuclear on them. After all, they might be able to do you a favor one day.
I every conversation I've had lately when I tell people what I do, they mention 3D printing. I have to gently tell people that I don't do 3D printing yet as products generally fall into one of two categories:
1. Inexpensive and low quality.
2. Expensive and high quality.
My current plan is to go after market #2 in a year or two when I can raise the capital to get a really good machine.
I started with, and plan to continue, waterjet and laser cutting as the limitations of these technologies are easy for most designers to understand. What you enter as a CAD file is pretty much exactly what you get out as a final piece.
As an aside, it's amazing that using a robot to blast away raw material into a finished part using an ultra high pressure stream of water and garnet or a frikken laser beam is considered "traditional" machining.
As has been mentioned elsewhere, Excel users are programmers, whether they know it or not.
What they need is the discipline of software engineering, a completely separate discipline from programming. If Excel spreadsheets had better encapsulation, internal documentation, automated testing, and the like, the world would be a better place.
The number is probably the exact amount to cover taxes on some other benefit, after taking out taxes on the salary itself.