Mr. Freeze: You will bring me Nora or you will die.
Professor Hugo Strange: I feel I should thank you, capturing Bruce Wayne is so much easier than Batman.
Batman: It was all a lie. There's nothing wrong with you.
Joker: Nice of you to say. But you of all people should know there's plenty wrong with me.
Answer: Because Batman didn't know until it was too late, and there was interference as he spoke to Alfred, if you remember hearing that. So contacting Gordon would've been even harder.
Rob245