It's disturbing that this owner so strongly adhere...

It's disturbing that this owner so strongly adheres to his profit structures. I took a 3 day dive in late September. Due to my error I had to alter an initial 4 day dive booking. Apparently within the guidelines, I was administered a 30% cancellation penalty (of the initial booking fee). My total extra costs, for a lesser dive, was aprox. $800.00 Cdn. On appeal that I did not 'cancel' but had a booking adjustment and continued as a client and that a lesser 'service charge' would be more appropriate, I was strongly denied. An odd way to welcome the international tourist.