Express your frustration, without anger, about this. Call the original person you contacted. Explain what happened when you made the referral calls. Express, without anger, your frustration. Then stop talking.
Silence is a powerful tool.
Let the silence work in your favor. Chances are the worker will share your frustration about not getting the right response for you. The questions may be necessary to ensure you get the kind of information you need. After learning the answer to these questions you can decide if you want to share the details. However, keep in mind, that without it, you may not get the kind of information that best meets your need.