Caltex - Rude cashier

I went in to buy something. Greeted the cashier then she keeps quiet. O had no clue my credit card taps and she already swiped it. So in my head I thought that it had not gone through since it looked like there was a problem with the machine. I then ask her then she says yes it went through as your mouth doesn't work. I found that extremely rude not to mention that she just continued chattering with the other customer although she could see I was waiting for her. Honestly, it would be better to have automated points of sale. So tired of bully cashiers.