I am not condoning the schedulers actions but one scheduler told me she has 5,000 shoppers, (or perhaps in the circle of things)....
I can see how it would be difficult to answer every letter. ..
I never write them unless I get a "clarification letter" but that's usually from an editor.
I wait 4 months before bugging them for money...
I too have wrote and not got a response...
But if thousands of Shoppers are writing you (as a scheduler) about pay, questions, late shops, definitions, qualifications, problems, questions about addresses, rules.....I think it would be a bit overwhelming at times.
Once again, I am not siding with either, but just saying maybe there is a reason why they don't call/write/email/text back? (might not be a good enough reason if YOU need one of the mentioned responses from them, that I do understand)...