I am glad to hear you had this straightened out.
As for your question about confirmation prompts, unfortunately, the confirmation for "phone" at the top of the voice menu (i.e. when you first press Voice button) is not done by SYNC, but by the Navigation headunit so there is not much I can help you with. However, it may be possible top adjust the Navigation headunit for better recognition, you should speak to a Ford dealer/customer service representative about that.
You can also experiment with how you say "Phone". Speech recognition is a very tough problem especially in a noisy environment such as a car. You may find that if you speak straight into the windshield as opposed to the microphone you may get better results. Also, always speak in a normal, constant tone of voice any intonations, speaking too loud or soft will generally make it much harder for the system to understand you.
I am glad that you are enjoying SYNC!