Condenscending and Unprofessional Agent

Had asked a simple question on a possible offer price but got an unpleasant condenscending email from an agent saying she's shocked and doesn't believe I know the area and prices of houses around the area. Many other agents simply respond to say no sorry not negiotable but seems this agent believes she knows my wealth and background without even speaking to me. A simple question and a simple answer required but she made it personal and made me feel inferior for asking something. Summary unprofessional and not the customer service you want when buying a house.