Absent instructors

The instructors for the classes at this gym is absent a lot. I get it that people get sick etc. but you go to the gym for a very specific class. The replacement seldom do the same class or the same kind of class which is not acceptable. The lady that does the rise and yoga class are always there and is brilliant. If she can do it, why not the rest.

It waste our time and money, we drive there, and I turn around and walk out. I have been to management, nothing is done.