Hi everyone--I was able to find a buy an X ticket for UA metal on TK miles. However, that flight won't now work for me. I'm unable to cancel online and I the call center agent told me that he could not cancel and refund the miles either. He recommended to try to call UA or to go to a sales office. Does anyone have a rec for which sales office might be the most amenable to helping me here? I doubt UA can do anything on their end, but I can try hitting them up as well...