Strata Management Companies- Glorified Bill Paying Service?

Have you ever asked yourself the question What does a strata manager actually do?

What do they really do because when it really comes down to it and you take a moment to think about it or they are really doing is paying bills for owners corporations and taking excessive amounts for this.

If someone thinks otherwise let me know, I am curious to find a strata manager that actually knows anything about the buildings they are managing and perhaps even more than just a location from a map or gps.