That's correct, I got one of the two wreck dives I had booked 1.5 months in advance and did a second reef dive that I had no interested in doing, and was subsequently refunded for it.
To further clarify- when I spoke to Stuarts the day before to confirm the trip was going to run, they said they were juggling things around and to accommodate another group doing reefs they were adding a 3rd reef dive and not charging me for it.
They didn't do me any favors. After diving for about 25 minutes on the first lackluster reef dive, I sat out the 3rd reef dive.
If I interpret the tone of your post correctly, you're suggesting that because I ordered a hamburger but was given only half a hamburger and a half a hot dog, being refunded for half a hamburger somehow makes it ok and I've got nothing to complain about.