I had a flight (CO ticket, CO metal) from November 18 FINALLY credit to my OnePass account after a bunch of back-and-forth.

Unfortunately, the miles have posted without the double miles bonus that was active during that period. The OPSC tells me that the promotion has expired. All attempts at reasoning that the promo HAD NOT expired when I flew the flight have fallen on deaf ears. I've called 5 times now and received the same illogical response.

Any suggestions as to what I can do? There are almost 5000 miles at stake here.