First of all, amazon.com look at your introductory paragraph of your correspondence, whenever, you would like to convey your message to concerned department, the prominent feature of amazon.com is to monitor your following things, which are as under
1 Structure and presentation
2 content and style
3 Are you talking about enquiries with amazon.com
4 sometime, you would like to discuss with them about their replies and quotations
5 Orders fulfilment by amazon.com
6 How to resolve the payment issue
7 More focus on complaints and adjustments
8 How to charge credit card on various products
9 amazon.com will let you know about their authorized banking channels
10 amazon.com will give you awareness about their business agents and agencies if involved
11 The best way is to ask the amazon.com about their transportation and shipping facilities