Extra fee for delivering at a Hospital

Well, I do not know how to respond to a call I just received. Ordered something from a company, paid them the fee (R120.00). I received a call saying that I had to pay extra (R400.00) because the delivery address is at a Hospital. Well, yes....this is where I work. What I don't understand, I get packages almost every week from companies using The Courier Guy. But never in my life did I have to pay extra because the delivery address is at a hospital. The lady at The Courier Guy who was on the phone with me was rude and did not even try listening to me. This was my last ANYTHING through The Courier Guy. I'm totally disgusted by this.