Upon examining my boarding pass, I notice the gate agent booked me in 'R' class. The whole episode left me very unhappy considerring I showed her my boarding passes from my CX and BA flights, and my original boarding pass to EWR was issued by CX in Hong Kong on a First Class boarding pass. THe agent first asked me if I wanted to pay the difference from Biz to First and when I objected, she told me she is closing the flight, so either take the biz class seat or not get on. Great customer service!