I called today to ask for credit and points on six on-board purchases for which I had not gotten the 50% credit or points. The person who took the call was clearly very very familiar with the issue. He politely put me on hold, confirmed there were six charges, and told me that he sent an email to his supervisor with all the necessary information and I should see the credit in two to three business days.
This is slightly different from the last time I called them - because that person was less aware of the issue. But it got resolved then and I hope it gets resolved now.
With all due respect to the customer service folks at Barclays - Hey JetBlue - get a new partner for your credit cards.