While I feel for your specific situation, this ain't it. Three reasons why not:
1.) This guy was no Verizon technician: He was dressed in street clothes. I've dealt with Verizon for years, both in Manhattan and Brooklyn, and every time, they are dressed in Verizon uniform. His "official" badge around his neck he so eagerly flashed seemed highly unofficial and therefore incredibly suspect.
2.) He was on foot, with no Verizon or any telecom van visible in either direction for three blocks, which are yes, easily visible to our naked eye from our building.
3.) He was incredibly odd-acting, very pushy, and asked to speak to the landlord, which would never happen if this were a legitimate Verizon call for DSL/trunk line work. And one more thing: This neighborhood remains ineligible for Fios, so there is NO Verizon DSL offered.
And in honor of decorum, I'm never interested in "screwing" any neighbors. In fact, in the example you provide, it was your ultimate responsibility to make your neighbors aware that work may need to be done on their property to meet the needs for what are your expected services. I mean, it's not as if any neighbor with no foreknowledge at all of such services that they did not themselves engage or pay for and therefore doesn't directly include them, should just simply be a mind-reader and hop to it to comply with what amounts to a third-party cold call they know nothing about that was initiated by you.