Yeeeeaaaaarrrsssss ago I lived in this fourplex thingy, had two phone jacks in my unit, but one jack was connected to god knows who!
I would pick it up and hear Chinese people yapping on the other end (there were no Asians living in the building).
So, I decided to take full advantage of it.
I lived there for a year and I called a LOT of sex lines on their dime!

:1orglaugh
And also yeeeaarrss (not as many as above) ago, don't remember how, but I was managing to get free calls from this one pro sex liner.
I would email her to let her know I wanted a chat and she would call me. She was GOOD.
That was another year of freebies.