Had this happen to me in the 90's with a dial up internet provider. The ISP said it was unlimited usage. So we had a second phone line in our house online a big

Had this happen to me in the 90's with a dial up internet provider. The ISP said it was unlimited usage. So we had a second phone line in our house online a big chunk of the day. Eventually we got a bill with a very large "dedicated line fee" because we were dialed in too much. After enough complaining they removed the charge, but it was a good lesson that "unlimited" services backed by a finite resource are never truly unlimited.