Your teachers seem to have failed you as your reading comprehension is lacking.
In school, a teacher is an employee. It’s their job. Outside of working hours, they’re not an employee. It’s their personal time. Job, personal time, very different things. If you expect them not to be this way, you’re kinda being an asshole towards them as a person.
To take the IT guy as an example. Do you expect to call them outside of their working hours to come fix your internet and call you pet names in the process? If so, wow do I have news for you!