Check your bill. Click on an amount equal to that bill, or a smaller amount that will be part of adding up to your bill amount. Put each amount in your cart until it adds up to your total bill.

For instance, if your bill is $25.00, click on $20.00 and add to your cart. When you go to the cart click on continue shopping to come back to this page, then click on $5.00 to add to cart. Now that your total is $25.00 you can continue on through the payment process.