Almost 99 percent of the time, customer service representatives handle difficult clients. In one contact with a customer service representative, a customer can release weeks' worth of stress and anxiety. The story below is an account of a hotel front desk clerk. The Karen of the century checks into the hotel, marking the official start of the story. OP can tell Karen is a troublemaker as soon as she sets foot in the vicinity. The altercation started with disagreements over the pet policy, then…