We had a very similar experience as the OP on a flight back from JFK last year. Seated on the upper deck on a red-eye the crew was so dismissive and gave the impression that they could not be bothered. Was a struggle to get dinner and any request (e.g. another glass of water) was met with a huff and a long wait.
Can understand the flight time may have played a part, but not the kind of service you would expect in business. On the plus side, me and the wife still joke about it and the experience has been set as the benchmark for comparison of all other crews.