Hopefully the statute of limitations has run out, but but when I was young and stupid, I "hacked" a local telephone box in the area to route a payphone line to my house.
I grew up in a supremely rural area. We were not at all wealthy but still one of the few households that could even afford a computer. The computer came with a modem and I wanted to use it to connect to the world. The problem was that every phone call beyond a 1-mile radius or so counted as "long distance," so calling virtually anywhere cost a certain fixed rate per minute. We experimented with CompuServe and Prodigy at various points but the long distance charges alone made it not worthwhile.
I eventually got to learning how physical phone lines worked and figured out that the same telephone box next to the road served both my house and the payphone for the store nearby. Long story short, I bridged the payphone's line to an unused pair at my house and started calling BBSes around the nation that way. I was always careful not to use it during the day, when someone might actually need to use the payphone.
Of course, it only took a couple of months for the phone company to figure out something was amiss. They undid my handiwork and put a lock and seal on the box. They COULD have charged my parents with theft of service or at least delivered a stern warning but evidently they did not or I certainly would have gotten an earful over it.
About a year later, the phone company brought in local dial-up Internet to the town.
Footnote: I found a list of toll-free BBSes somewhere and there were HUNDREDS of numbers listed. I tried them all. Only maybe a dozen were actually free BBSes that you could create an account and log into, the rest were either dead, fax machines, or systems for some specific purpose. Aside from one fairly popular message board that eventually got shut down, it turns out there wasn't much to do on any of them.