Asking Roadside Assist for a battery boost

I was late for a meeting. Your service provider came unprepared to boost my vehicle. He called for support to bring additional equipment. He still could not start the vehicle. He then said its not the battery. I had to tell him how to increase the power to get the vehicle started. It was the battery after all. It took a long time from the time he arrived. What if it was my wife who did not understand these things.