Dear traveler,
I am sure that school buses do not have luxury leather seats, media screens, and 2 A/C systems (they work perfectly). Every seat has separate ventilation and yours could have been closed. I am sure if you have asked your guide or driver they would have helped you. Regarding the visit to the cave, according to our guide, it was decided after a discussion with all travelers and it was an extra site that you have visited. It was a compliment from us. Sorry that you have not liked it and it was difficult for you but it was not a last moment chaotic decision of the guide.