You need to be more explicit in your question
.
They have internal and external schedulers on the same projects.
Different projects have multiple schedulers.
Different schedulers in different regions.
What is the problem your having?
I have not had a problem with a scheduler, so am not able to give insight on that; but have you noticed that in 2015 the shopper fees have gone down? The pay is less than in 2014? I'm in Florida so I don't know if that has anything to do with it.
One scheduler in particular. She does not respond to emails, just likes to schedule shops and disappear. A $15 shop caused me to send 4 emails and several calls to the office to get a reschedule date because the target did not return my inquiry call. The shop was removed from my board, and all the work I had already put into it was almost lost because she did not respond to me. I will not schedule any more shops with her.