Bad day on the water, but everyone made it back. I would expect the dive operator would comp you in some way for the "lost" dive. But I would not go looking for it. If they didn't comp you, well, you now know how this operator works. We never do, but that is a question you should ask before putting your money down. Caveat emptor.
Funny story, local dive operation in South Florida, my buddy and I went out on an afternoon dive, it was a sh*t show from the very beginning and ended with them losing a diver for a bit, due to the captain's ignorance. It so poorly run and dangerous that my buddy and I sat out the second dive, knowing something "bad" would happen. There was a new diver on the boat and we told him to sit out the 2nd dive also, he thanked us when we got off the boat. We made our feelings/opinions clear and polite with the captain. As we were loading our gear at the dock the shop manager came out and apologized and said our next trip would be free......we thanked her but said, no thanks, we wouldn't be coming back.