I received a confirmation of the order by email. The day before the appointment, I received an email giving me the name (and a photo) of the specialist that would do the replacement. The morning of the appointment, the specialist called to confirm location and time to do the replacement. He arrived on time. He did the replacement in less than an hour. He gave thorough directions on what he did and how to take care of the new replacement. He was very pleasant and professional. Job well done!