I'm sorry that happened. I hope they turn up. I still think that a glass or PVC
protective enclosure is a great way to have your corals attach the natural way however glue is often a quick fix. I just found that you can only use glue for Stoney corals. Leathers and really any soft coral often grow a slime coat which defeats the purpose of the glue.
Best if luck with all of it. We all have sad stories. Unfortunately it seems to be part of the hobby.