Well it sure sounds to me like she was trying to blow you off hoping you wouldn't come back. As a tech I can tell you that noise concerns are the worst kind of jobs for us to get. Ford won't pay us unless we can find something wrong. So if we drive it several times a day and can't duplicate it or have a hard time figuring out what the noise is then we are screwed. I do think they should have at least performed the TSBs for you and then have you come back another time. Also Ford would have paid for at least the Reflash even if they couldn't duplicate it. Since your concerns match the TSB, Ford would have paid.