Excellent customer service involves consistently exceeding customer expectations before, during, and after the sale. Only 4% of customers complain about poor service, while most will find a new company after a bad experience. Providing excellent service is more cost effective, since it costs 6-10 times more to acquire a new customer than retain an existing one. The second concierge in the scenario provides better service by offering to package and ship the customer's items through the carrier of their choice, and sending them in a few days to ensure the customer is home to receive them.