Every once in a while customers complain that they are seeing "unauthorized" credit card charge(s) on their bank account. Customers attempted to place an order online, and the credit card declined for some reason but the bank account of a buyer shows that the charge went through. We (the merchant) look up our payment gateway and see multiple "declined" transactions. Customers ask us to remove the charge(s) for those transactions that were never approved in the first place. So, what is going on here? Let's start out with the customer's question and the merchant's response.

The first six digits of each credit card account number are called the Bank Identification Number (BIN) and the next three digits determine the card type. The first nine digits of credit card numbers allow merchants to identify card-issuing institutions and what type of credit card is being used.

Now that you have built an effective e-commerce website, the next crucial step is to promote it efficiently. Without proper promotion, even the best-designed websites can struggle to attract the necessary traffic and generate sales. Here are some strategies to boost the visibility and success of your e-commerce venture:

Building and running an e-commerce website is not a trivial task. This two-part article will discuss how to build a feature-rich e-commerce website and also cover strategies for promoting your website efficiently.