OMG!!! I am so disappointed

[Trabby]

I went out and finally coughed up $40 for a skunk cleaner shrimp today. So after carefully acclimatizing him I put him into my tank. He scooted around for a few minutes and then decided to have a snack . So as I am watching him stirr up some goodies around the back of the tank , all of a sudden both of my nassarius snails come flying out of nowhere. The one then procedes to completely engulf my beautiful little shrimp into his slimey slug body and has had him in a sleeper hold ever since. What the !@#!@# has anyone ever heard of this before? According to the lfs there is nothing in my tank that is uncompatible.I cannot believe it..............