I imagine everyone who was a kid during the dial-up times has a horror story of being confronted with an enormous phone bill by their parents. I remember mine going mental at me for costing us £40 one month (normal service was iirc ~£10)
please prove me wrong
Then we were in Germany in the late 90s and even local calls cost money so one had to be wary of how many hours you were online. Eventually we got flat-rate and ISDN 64k and then 128k but it wasn't long after that we moved back to the US.