Speaking of making a person.. at this startup I worked at years ago (before LinkedIn existed), it was a tiny shop and we were all maxed out time-wise. It was frustrating when we had to deal with incredibly persistent salespeople that wouldn't take no for an answer, and others that preyed on our time relentlessly for no apparent reason. So as a joke we invented a fake employee with a fake name. I think his first name…
I do have my cell phone in my internal contact info but the culture where I work is that pretty much no one makes a voice call to anyone out of the blue. And I'm very selective who else I give the number to.