If you want to be treated like a professional, act like one.
Call a doctor or a lawyer and see how long you can talk on the phone for free before you get asked for a scheduled / paid office appointment.
If you keep doing things for free -- that's your own fault.

You can go on WebMD but still chose to see a doctor.
You can use legalzoom but still talk to a lawyer (when it really counts).

Spend few minutes on the phone to qualify them, discuss your onsight fee schedule and setup a consultation appointment.
Bill for your time, quotes and design.