My son is scheduled to have braces put on his teeth next week. We have visited the orthodontist twice thus far. The first time for a free evaluation, (during which we were told that my son needed braces), and the second time for a mold to be made of my son's mouth. As I said, we are to go back next week for braces to be applied, however, I have decided that I do not care for this orthodontist personally and I wish to use another orthodontist instead. The agreement states that it is for "24 month comprehensive treament", but it in no way breaks down the costs by specific service, equipment, supplies, labor, etc.... Since the braces have not been applied, am I legally bound to the agreement?