The technician waited. Just a little after 9:30 the customer opened the door and let him into a dark house. They went to the kitchen, where a microwave was to be assembled and installed. The job had clearly already been started. The technician surveyed the appliance and the space. He noticed a part was missing, and asked for it. The owner went to a dark room and brought it to him. Shortly thereafter, another part was missing. This time the owner went to a different room to get the missing part. This happened a third time, from a third room.
The job took less than 30 minutes. The lights were never turned on. The customer paid, and gave him a $20 tip.