American taxi-head...

What is up with taxis in the US. We jump in a cab at the airport, travel to the hotel and hand over a credit card to pay – I would consider this standard practice. We are then informed that because we had not indicated we would pay using a CC when we got in that he could not accept it; so we were then forced to pay cash?!? There was no reason given and certainly no flexibility shown by the driver in helping tourists – what a w*****! So next time you are in the US and want a cab remember to declare your payment method before getting in – dumb!