'Customer Satisfaction' is the most sought-after thing among business houses. Business entrepreneurs strive hard to increase customer satisfaction and to gain their confidence. Because all of them know the importance of retaining their existing customers. Most companies derive 40 to 50% of their revenue through their existing customers. If all these customers leave then the company has to fill this 40% to 50% gap with new customers so that it won't go on loss. But this is not an easy task; it is rather easy to retain the existing customers with right customer support. Business owners implement new methodologies in business process which not only provide best product but also the best services to their customers. One such tool is toll free numbers, where the call is free of charge for customer.