A demanding client is the most stressful or a client that refuses the car u are there 2 provide. I have learned that no mater how demanding the client is @ the end of the day u get to go home. I let it roll of my back. I have always felt satisfied with my work day in the end. Most the time the more demanding the client is, the faster the day goes by. As far as 2 refuse the care I always went by the proto call of the company I worked for.