Big Red will NEVER admit to anything less than absolute perfection on their end. Even though they are remarkably agreeable to crediting your account, they will NEVER admit the error was their fault - they are just being courteous by giving the customer the "benefit" of the doubt. They are banking on the typical Joe Average not auditing their bill every month and most of the time it pays off big time. VZ isn't alone - if you prefer to audit a blue bill, just call up AT&T.