That is why the Code of Value - "Communicating any potentially broken agreements at the first appropriate opportunity to all parties concerned" - particularly resonates with me. This is why we at Mr. Rooter Plumbing work hard to ensure our customers know when we can't do exactly as we promised. If our technicians will be late, or a job may take longer than we expected - rest assured we will let you know ahead of time. This takes away the unpleasant surprise of realizing when things don't always go as planned.
Here's wishing you a world class day!