I don't think calling the ISP was actually what they didn't feel like doing. It is more the call itself. Being put on queue with wait music, dealing with first line customer support who have no clue what you are asking, waiting to be connected to the right support, being connected to the wrong support, being put on hold again, suddenly being hung up on, rinse, repeat.
Which is a whole different type of mental challenge compared to figuring out the technical details of self hosting something ;)