Aha, but when they decline to "hear" a case, they do not base the decision on no information regarding the case, they instead accept and interpret the case and determine if their limited time/attention/effort/energy is well spent on the particular request based on what they have been initially told.

Much like when someone says "Hey, could you give me a ride...?" Having received the request, you have the power to consider whether your limited time/attention/effort/energy is well spent on that request.