Your service was not what it could have been. They should have given you a padded time estimate after finding out they needed to order parts. I pad all my times and price quotes because you never know, sometimes it takes forever for a part to show up, often when a part arrives the price on the packing slip is different than the one in the catalog.
Cyclepath, as far as the price level of a bike, I could not care less, a bikes a bike. Often the high end guys act like children and i would rather deal with a casual/fun rider. Commuters can be a little high strung as often it is their only bike and they want it NOW, doesn't matter that twelve other people already have been promised.
As far as it goes, most people are cool, some are jerks and every body screws up sometimes.