Don't hesitate to change your TV salesperson (realtor) if you're not pleased with the one you were assigned. I agree that you ought to talk to one of the sales managers. Tell them what you're unhappy about and ask to be re-assigned. I did and am so glad that I did. I felt the person they initially assigned me was not sufficiently knowledgable and was not motivated to find information that I needed to make a decision. There are many good TV salespeople. Work with one you like and feel you can trust.
