You can listen to the 911 call but won’t find out what was said from newspapers and tee vee. They reported Zimmerman disobeyed the “order” to not follow Martin. It was actually a suggestion from the 911 operator and Zimmerman did take the advice because Martin shook him anyway and he did not know where he went.
Correct me if I'm wrong, but it wasn't a 911 call.
Mr. Zimmerman was talking to the police DISPATCHER.