@Mengen1 @Whilst it is no doubt true that some hosts may (appear to) be “mean and unsympathetic”, I suspect that many, perhaps even the majority, go well beyond the level of service and flexibility you could reasonably expect from other travel industry providers such as hotels and airlines.
Would I react in the same way as your host? Probably not, and I bet many others on here would show more sympathy too, but it’s a personal call and we only have your side of the story.
this particular case, there is nothing “unfair” about ABB’s policy. You simply failed to exercise due care and are unlucky in that it has cost you in this instance. I think you need to accept that and move on - could be worse, as they say.