How unpleasant, I'm very sorry for your experience. We had a similar experience on our Texas shooting workshop. We were given permission to photograph an abandoned saloon in the country, even had the gate unlocked for us and then 30 minutes later the owner came roaring up in a pick up swearing and shouting that we were tresspassing and to get OUT!! We did and tried to explain that his caretaker had let us in and we thought we had permission, after all how else could we have unlocked the lock??? He of course was so livid he would not listen. I had taken all the photographs I wanted but others with LF cameras were in the middle of a shot and had to pack up and leave. What a bad impression he made. although everyone else we met was so friendly and helpful we will all remember him.