Dealing with refunds on a ticket where a carrier claimed segments as being used that were never flown is no fun either.
I had a ticket that had the outbound as AA to BA to BA with a stopover between the BA flights. For some reason BA processed both BA segments as having been flown although only one of those two segments had been flown. I submitted to AA that it would have been physically impossible for me to have flown the segment that BA claimed I flew as I had: a) boarding passes; b) flight credit in my AAdvantage account; and c) immigration stamps, all of which indicated that I was elsewhere -- on another flight -- at the time of the flight which BA processed as having been flown. In the end, I got a good number of miles from AA for a mistake that seems to have been BA's fault.
