A coursereader problem states the following: 11/20 Hailey Retailers sold 2 items of merchandise to Customer B, who charged $400 sales price on her...

A coursereader problem states the following: 11/20 Hailey Retailers sold 2 items of merchandise to Customer B, who charged $400 sales price on her Visa credit Card.  Visa charges Hailey a 2 percent credit card fee.

The transaction recorded as follows: 

11/20

Accounts Receivable-Visa        392

Credit Card Discount                   8

     Sales Revenue                               400

I don't understand why Hailey Retailers get the fee if it is not their credit card.