Job Description for. Customer Service Rep. (CSR). Objective. Upbeat friendly voice, smile, move fast, and SELL SELL SELL. Build Customer Loyalty. Provide the best customer service possible to ensure a high degree of customer satisfaction. You are expected to sell gasoline, car washes, tobacco products, beer, hot food, bakery, candy and various related products to retail customers. Maintains facility, prepares and merchandises products to ensure a...