I gleaned several things:
1) OP paid for the EP seat on the original booking, but that was refunded when he rebooked the date.
2) It may indeed be just a nice/clueless agent and not a reproducible hack.
3) OP needs to use punctuation marks to aid his readership in understanding him. It would be even more helpful if he would add all the relevant facts, even if the post seems to be getting too long.