Without going into the boring ins and outs, how much response, contact or even compensation would you expect for a double booking at a holiday cottage, both for
Party A - the party that had to be put up in new accommodation, which was not up to the standard of the original property booked (hotel instead of self-catering) and not in quite the same location (next town over)
Party B - the party that stayed in the original accommodation, but spent several hours on their first evening with Party A in the property as new accommodation was sorted out.
If it matters, manager/owner did not live locally and so everything was sorted over the phone.
AIBU to think that a double booking is probably one of the cardinal sins for the manager of a holiday property, and the manager's reaction should at least acknowledge this?