When the you consulted with the agent at the listing appointment, did this topic come up? Did the agent ask you if you wanted to have the address shown or was it their decision?
I suggest you speak to your agent again about this. If the agent still will not honor your request, then I would speak to the broker. The agent is your employee and should honor your requests. People sometimes like to do drive-bys before actually seeing the property to make sure it is in a neighborhood they will like. Without an address, that is less likely to occur.
Buyers are very hesitant about calling agents. They are less likely to call an agent unless they are sure they are ready to buy simply because they do not wish to be "harassed" by a salesperson.
If the agent still will not honor your request, check to see if the contract will allow you to opt out if the agent does not deliver services as promised, and also check with the broker about it. I would also check with a real estate attorney about it.
I usually suggest to buyers and sellers to interview several agents to see which one will be the best for the job. You need to find one that you can trust and feel comfortable with.
Brigita McKelvie, REALTOR, e-PRO, GRI
Keller Williams Real Estate, Bethlehem, PA