An authorization hold will be placed on your credit or debit card when you place an order. Your account will not actually be billed until your order is. Webcitibank account online* is where you manage your my best buy® credit card. Cardmembers have the ability to pay their bill, view statements, view card transaction. Webthe my best buy ® credit card offered by best buy ® and citibank allows you to access reward and financing options for your best buy ® purchases. What is the difference. Webmanage your best buy credit card account online, including updating information and setting up alerts.