He tried to call, but he couldn’t get through, likely because he wasn’t on the “contributors’ list.”
Or she had her illegal server hooked to the phone.
Well, not sure how accurate it is, but this was portrayed in one of the films about him, and basically they were getting the run around from underlings at the State Dept who didn’t really believe he was who he said he was. So eventually he just got to some mid-level person and said “we’re going to release these cables in XX hours, tell your superiors whatever they need to do to protect their sources, they better do it now”. Whether that message was relayed to anyone or not, who knows?