It is fraudulent not to tell passengers we will be charged $3 to use a credit card. Every cab I've ever been in and used a credit card it has been at no extra charge. For Ace, it's a $3 charge and it's not posted anywhere and the driver didn't mention it when we asked him if he takes credit cards. It would be very simple for the company to put a sticker on the card swipe that states the fee or for the driver to simply mention it. We had cash and didn't learn about the fee until the transaction was completed. Fraud!