I feel your pain. I had the worst of luck with Phals until I did 2 things
1. I reported in 1/2 sphag and 1/2 bark. They come in packed sphag from the store and they were rotting to some degree.
2. I got a seedling mat. My space was a little too cold and the seedling mat was just enough warmth to the roots to make them happy.
I don't have 100 percent success, but at least its not 100% failure! I have several that spiked and bloomed. Typically bud blast is due to temp variation or direct breezes. .
I understand your disappointment! A few of my smaller orchids lost their blooms to dreaded scale. This summer, I plan to hit my orchids with malathion so I don't lose the next batch. Drafts, insects, incorrect watering, dry air...flowers are delicate. I hope you figure out what happened for next time!