Amazon is one of the best e commerce site in india. the customer service is really good.18003009009 is the customer care number and its totally toll free. the chat service is also provided. the product quality of branded product is 100 percent genuine.it takes much delivery time but if you use amazon prime it will deliver within 24 hours.prime service is really very good. there is no complain about the app and the website. the reliability is much good.