We are really sorry you feel you wasted your day. Nobody could know the guide was going to have a disc protrusion. It is beyond anybody's control and can happen to anyone. We really had the best of intentions, brought the local food,refreshments,fruits and were willing to make it up to you but you were leaving in two days and from what you said it was clear there was no time to take the tour again. I apologized so many times and you showed such empathy on the spot repeating it was ok. If you had wanted a refund for the petrol,you should have been sincere and asked for it there. Kind regards