Penny,
My mate (who starts Friday) made quite a few phone calls after his Medical to push his case. He got through to a human at recruiting 70-80% of the time, The answers weren't very direct, but he did have limited success. He also told then that he had a job with JQ (which was true) and that the start date was imminent.
My advice - keep calling them till you speak with someone. It's not unheard of for a file to drop to the bottom accidentally.
Good Luck