No, its only a lie if they say they were going to do it without ever intending to do so. If they intended to do it and something happened that prevented them from doing it, it wasn’t a lie. If you’re looking for a reason to be pissed at someone for not fulfilling a promise you still can be justified depending on the rest of the context.
What if they intended to fulfill the promise but never actually did? Does that not make it a lie all the same?
I don’t think so. That would make it a mistake. Just like if I made a claim that I believed true but wasn’t.
No, its only a lie if they say they were going to do it without ever intending to do so. If they intended to do it and something happened that prevented them from doing it, it wasn’t a lie. If you’re looking for a reason to be pissed at someone for not fulfilling a promise you still can be justified depending on the rest of the context.