Jammed front passenger belt. unable to use front seat for passengers. belt jammed when trying to belt-in.to leave our home. went to dealer service dept. mechanic tried to pull on it with no release. after conferring with supervisor and manager, they told me i needed to have a new seat-belt unit installed. that part would cost $300. plus install charges. should we have to pay for a safety issue malfunction which prohibits use of front passenger seat. there are only 2 adults in this household.