I've had the receptionist vs. nurse vs. doctor problem too. The saga went along the lines of:
a) Travel vaccination specialist (MASTA Clinic) - you have to get another tetanus booster, but get it via your GP, because they won't charge you...
b) receptionist - are you sure you need a booster?
c) GP - I agree, you need a booster, book an appointment with the nurse.
d) nurse - you don't need a booster, both the GP and the MASTA Clinic doctors don't know what they are talking about. I'm not going to give you a tetanus booster. You've had two, that will cover you for the rest of your life.
e) Me - but the doctors, and my reading, confirm that I need one.
f) Nurse - you don't. I'm not giving you the booster.
g) Me - Okay, but I'm going to double-check with both doctors about this, because of the total conflict of advice. I am travelling to the back-of-beyond and need to be sure I am covered for tetanus infection.
h) Nurse - You don't need a booster.
i) Me - You told me. I'm still checking with the doctors.
j) Nurse (very unhappy) - give me your arm.
k) Me - Ow! :o